diff --git a/.github/ISSUE_TEMPLATE/bug_report.md b/.github/ISSUE_TEMPLATE/bug_report.md
index d37caece..6d6ae073 100644
--- a/.github/ISSUE_TEMPLATE/bug_report.md
+++ b/.github/ISSUE_TEMPLATE/bug_report.md
@@ -8,7 +8,7 @@ about: Create a report to help us improve
 <!--
 Are you in the right place?
   * For issues or feature requests related to __the code in this repository__
-    file a Github issue.
+    file a GitHub issue.
     * If this is a __feature request__ make sure the issue title starts with "FR:".
   * For general technical questions, post a question on [StackOverflow](http://stackoverflow.com/)
     with the firebase-authentication tag.
diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index 407252b4..3714a73e 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -33,7 +33,7 @@ feature development in FirebaseUI.
 ### Code reviews
 
 All submissions, including submissions by project members, require review. We
-use Github pull requests for this purpose. Please refer to the
+use GitHub pull requests for this purpose. Please refer to the
 [Style Guide](STYLEGUIDE.md) and ensure you respect it before submitting a PR.
 
 ### The small print
diff --git a/README.md b/README.md
index bf577643..9548e4dd 100644
--- a/README.md
+++ b/README.md
@@ -146,7 +146,7 @@ provider you want to use in their own developer app settings. Please read the
 - [Google](https://firebase.google.com/docs/auth/web/google-signin#before_you_begin)
 - [Facebook](https://firebase.google.com/docs/auth/web/facebook-login#before_you_begin)
 - [Twitter](https://firebase.google.com/docs/auth/web/twitter-login#before_you_begin)
-- [Github](https://firebase.google.com/docs/auth/web/github-auth#before_you_begin)
+- [GitHub](https://firebase.google.com/docs/auth/web/github-auth#before_you_begin)
 - [Anonymous](https://firebase.google.com/docs/auth/web/anonymous-auth#before_you_begin)
 - [Email link](https://firebase.google.com/docs/auth/web/email-link-auth#before_you_begin)
 - [Apple](https://firebase.google.com/docs/auth/web/apple)
@@ -547,7 +547,7 @@ To see FirebaseUI in action with one-tap sign-up, check out the FirebaseUI
 |Google            |`firebase.auth.GoogleAuthProvider.PROVIDER_ID`  |
 |Facebook          |`firebase.auth.FacebookAuthProvider.PROVIDER_ID`|
 |Twitter           |`firebase.auth.TwitterAuthProvider.PROVIDER_ID` |
-|Github            |`firebase.auth.GithubAuthProvider.PROVIDER_ID`  |
+|GitHub            |`firebase.auth.GithubAuthProvider.PROVIDER_ID`  |
 |Email and password|`firebase.auth.EmailAuthProvider.PROVIDER_ID`   |
 |Phone number      |`firebase.auth.PhoneAuthProvider.PROVIDER_ID`   |
 |Anonymous         |`firebaseui.auth.AnonymousAuthProvider.PROVIDER_ID`|
@@ -883,7 +883,7 @@ ui.start('#firebaseui-auth-container', {
       provider: 'saml.myProvider',
       providerName: 'MySAMLProvider',
       // To override the full label of the button.
-      // fullLabel: 'Constractor Portal',
+      // fullLabel: 'Contractor Portal',
       buttonColor: '#2F2F2F',
       iconUrl: '<icon-url-of-sign-in-button>'
     }
@@ -1053,7 +1053,7 @@ ui.start('#firebaseui-auth-container', {
       provider: firebase.auth.EmailAuthProvider.PROVIDER_ID,
       // Use email link authentication and do not require password.
       // Note this setting affects new users only.
-      // For pre-existing users, they will still be prompted to provide their
+      // For preexisting users, they will still be prompted to provide their
       // passwords on sign-in.
       signInMethod: firebase.auth.EmailAuthProvider.EMAIL_LINK_SIGN_IN_METHOD,
       // Allow the user the ability to complete sign-in cross device, including
@@ -1195,7 +1195,7 @@ ui.start('#firebaseui-auth-container', {
       // populate the country selector. So for countries that share the same
       // country code, the selected country may not be the expected one.
       // In that case, pass the 'defaultCountry' instead to ensure the exact
-      // country is selected. The 'defaultCountry' and 'defaultNationaNumber'
+      // country is selected. The 'defaultCountry' and 'defaultNationalNumber'
       // will always have higher priority than 'loginHint' which will be ignored
       // in their favor. In this case, the default country will be 'GB' even
       // though 'loginHint' specified the country code as '+1'.
@@ -1547,7 +1547,7 @@ ui.start('#firebaseui-auth-container', {
             return app.database().ref('users/' + user.uid).set(data);
           })
           .then(function() {
-            // Delete anonymnous user.
+            // Delete anonymous user.
             return anonymousUser.delete();
           }).then(function() {
             // Clear data in case a new user signs in, and the state change
@@ -1837,7 +1837,7 @@ the incoming link when the user clicks it to complete sign-in.
 |Google            |`firebase.auth.GoogleAuthProvider.PROVIDER_ID`  |
 |Facebook          |`firebase.auth.FacebookAuthProvider.PROVIDER_ID`|
 |Twitter           |`firebase.auth.TwitterAuthProvider.PROVIDER_ID` |
-|Github            |`firebase.auth.GithubAuthProvider.PROVIDER_ID`  |
+|GitHub            |`firebase.auth.GithubAuthProvider.PROVIDER_ID`  |
 |Email and password|`firebase.auth.EmailAuthProvider.PROVIDER_ID`   |
 |Anonymous         |`firebaseui.auth.AnonymousAuthProvider.PROVIDER_ID`|
 |Microsoft         |`microsoft.com`                                |
diff --git a/bower.json b/bower.json
index 76393e72..d8abc6a4 100644
--- a/bower.json
+++ b/bower.json
@@ -1,7 +1,7 @@
 {
   "name": "firebaseui",
   "version": "6.0.0",
-  "description": "Javascript library for customizable UI on top of Firebase SDK",
+  "description": "JavaScript library for customizable UI on top of Firebase SDK",
   "main": [
     "./dist/firebaseui.js",
     "./dist/firebaseui.css"
diff --git a/buildtools/container/Dockerfile b/buildtools/container/Dockerfile
index 72ac3d64..7b8c7a7a 100644
--- a/buildtools/container/Dockerfile
+++ b/buildtools/container/Dockerfile
@@ -12,11 +12,11 @@ RUN npm -v
 RUN curl -fsSL --output hub.tgz https://github.com/github/hub/releases/download/v2.11.2/hub-linux-amd64-2.11.2.tgz
 RUN tar --strip-components=2 -C /usr/bin -xf hub.tgz hub-linux-amd64-2.11.2/bin/hub
 
-# Install the lastest Chrome stable version.
+# Install the latest Chrome stable version.
 # RUN wget https://dl.google.com/linux/direct/google-chrome-stable_current_amd64.deb
 # RUN dpkg -i google-chrome-stable_current_amd64.deb; apt-get -fy install
 
 # Pin Chrome v119 because we're pinning this version in CI.
-# TODO: Install the lastest Chrome stable version once we unpin chrome version in CI.
+# TODO: Install the latest Chrome stable version once we unpin chrome version in CI.
 RUN wget https://edgedl.me.gvt1.com/edgedl/chrome/chrome-for-testing/119.0.6045.105/linux64/chrome-linux64.zip
 RUN dpkg -i google-chrome-stable_119.0.6045.105_amd64.deb; apt-get -fy install
diff --git a/buildtools/country_data/filter_country_data.js b/buildtools/country_data/filter_country_data.js
index 6a644794..b8bc5772 100755
--- a/buildtools/country_data/filter_country_data.js
+++ b/buildtools/country_data/filter_country_data.js
@@ -59,7 +59,7 @@ var translatableMsgs = fullCountryData.map(function(countryData) {
 console.log(translatableMsgs);
 
 // Make the JSON object reference the translatable messages.
-// This is kind of hacky since we set the the value to a string containing the
+// This is kind of hacky since we set the value to a string containing the
 // variable name, and then unquote the string below.
 outputCountryData = outputCountryData.map(function(countryData) {
   countryData.name = getCountryNameVariable(countryData);
diff --git a/buildtools/country_data/generate_country_data.sh b/buildtools/country_data/generate_country_data.sh
index 6c3cace1..3a567440 100755
--- a/buildtools/country_data/generate_country_data.sh
+++ b/buildtools/country_data/generate_country_data.sh
@@ -24,7 +24,7 @@ if [[ $# -eq 0 ]] ; then
     exit 1
 fi
 
-# Retrieve flag source images from Github.
+# Retrieve flag source images from GitHub.
 TMP_DIR=$(mktemp -d)
 FLAGS_DIR="$TMP_DIR/region-flags"
 git clone https://github.com/googlei18n/region-flags.git "$FLAGS_DIR"
diff --git a/buildtools/run_tests.sh b/buildtools/run_tests.sh
index 09cece00..4eebccfb 100755
--- a/buildtools/run_tests.sh
+++ b/buildtools/run_tests.sh
@@ -45,7 +45,7 @@
 # This will start the HTTP Server locally, and connect through SauceConnect
 # to SauceLabs remote browsers instances.
 #
-# Github Actions will run `npm test -- --saucelabs`.
+# GitHub Actions will run `npm test -- --saucelabs`.
 
 cd "$(dirname $(dirname "$0"))"
 BIN_PATH="./node_modules/.bin"
diff --git a/externs/firebaseui-externs.js b/externs/firebaseui-externs.js
index 46271b65..2b1bfd79 100644
--- a/externs/firebaseui-externs.js
+++ b/externs/firebaseui-externs.js
@@ -1062,7 +1062,7 @@ firebaseui.auth.PhoneSignInOption.prototype.defaultNationalNumber;
 
 /**
  * The full phone number string instead of the 'defaultCountry' and
- * 'defaultNationalNumber'. The 'defaultCountry' and 'defaultNationaNumber'
+ * 'defaultNationalNumber'. The 'defaultCountry' and 'defaultNationalNumber'
  * will always have higher priority than 'loginHint' which will be ignored in
  * their favor.
  * Example: '+11234567890'
diff --git a/firebase-externs/firebase-auth-externs.js b/firebase-externs/firebase-auth-externs.js
index f286f66c..bf0c43ac 100644
--- a/firebase-externs/firebase-auth-externs.js
+++ b/firebase-externs/firebase-auth-externs.js
@@ -2057,7 +2057,7 @@ firebase.auth.Auth.prototype.signInAnonymously = function () {};
  * <h4>Error Codes</h4>
  * <dl>
  * <dt>auth/invalid-user-token</dt>
- * <dd>Thrown if the user to be updated belongs to a diffent Firebase
+ * <dd>Thrown if the user to be updated belongs to a different Firebase
  *     project.</dd>
  * <dt>auth/user-token-expired</dt>
  * <dd>Thrown if the token of the user to be updated is expired.</dd>
@@ -2351,7 +2351,7 @@ firebase.auth.AuthError.prototype.phoneNumber;
 /**
  * The tenant ID being used for sign-in/linking. If you use
  * {@link firebase.auth.signInWithRedirect} to sign in, you have to
- * set the tenant ID on Auth instanace again as the tenant ID is not
+ * set the tenant ID on Auth instance again as the tenant ID is not
  * persisted after redirection.
  *
  * @type {string|undefined}
@@ -2585,7 +2585,7 @@ firebase.auth.FacebookAuthProvider.prototype.setCustomParameters = function (
 ) {};
 
 /**
- * Github auth provider.
+ * GitHub auth provider.
  *
  * GitHub requires an OAuth 2.0 redirect, so you can either handle the redirect
  * directly, or use the signInWithPopup handler:
@@ -2669,7 +2669,7 @@ firebase.auth.GithubAuthProvider.GITHUB_SIGN_IN_METHOD;
  *     event.authResponse.accessToken
  * );
  *
- * @param {string} token Github access token.
+ * @param {string} token GitHub access token.
  * @return {!firebase.auth.OAuthCredential} The auth provider credential.
  */
 firebase.auth.GithubAuthProvider.credential = function (token) {};
@@ -2678,7 +2678,7 @@ firebase.auth.GithubAuthProvider.credential = function (token) {};
 firebase.auth.GithubAuthProvider.prototype.providerId;
 
 /**
- * @param {string} scope Github OAuth scope.
+ * @param {string} scope GitHub OAuth scope.
  * @return {!firebase.auth.AuthProvider} The provider instance itself.
  */
 firebase.auth.GithubAuthProvider.prototype.addScope = function (scope) {};
diff --git a/firebaseuihandler/README.md b/firebaseuihandler/README.md
index 30c37517..cfec1e69 100644
--- a/firebaseuihandler/README.md
+++ b/firebaseuihandler/README.md
@@ -291,7 +291,7 @@ callbacks: {
 ```
 
 ### Configuring a single federated provider
-If you only have one tenant/top-level project configured for the IAP resouce and
+If you only have one tenant/top-level project configured for the IAP resource and
 only one provider enabled for the tenant/project, FirebaseUI will act as a proxy
 between the IAP resource and the federated IdP without showing any UI before
 redirecting to the IdP sign-in page:
@@ -388,7 +388,7 @@ interface Callbacks {
 
 // Interface that represents the tenant-level configurations.
 interface TenantConfig {
-  // The full label for the tenant in the tenant selection buttion. Only needed
+  // The full label for the tenant in the tenant selection button. Only needed
   // if you are using the option first mode.
   // When not provided, the "Sign in to $displayName" label is used.
   fullLabel?: string;
@@ -416,10 +416,10 @@ interface TenantConfig {
   // selection screen.
   signInOptions: Array<string|SignInOption>;
   // The URL of the Terms of Service page or a callback function to be invoked
-  // when Terms of Service link is clicked after the tenant is determind.
+  // when Terms of Service link is clicked after the tenant is determined.
   tosUrl?: (() => void) | string;
   // The URL of the Terms of Service page or a callback function to be invoked
-  // when Terms of Service link is clicked after the tenant is determind.
+  // when Terms of Service link is clicked after the tenant is determined.
   privacyPolicyUrl?: (() => void) | string;
 }
 
diff --git a/gulpfile.js b/gulpfile.js
index 59130fcc..49f06997 100644
--- a/gulpfile.js
+++ b/gulpfile.js
@@ -153,7 +153,7 @@ gulp.task('build-soy', () => new Promise((resolve, reject) => {
  * @param {!Array<string>} srcs The JS sources to compile.
  * @param {string} out The path to the output JS file.
  * @param {!Object} args Additional arguments to Closure compiler.
- * @return {*} A stream that finishes when compliation finishes.
+ * @return {*} A stream that finishes when compilation finishes.
  */
 function compile(srcs, out, args) {
   // Get the compiler arguments, using the defaults if not specified.
diff --git a/javascript/testing/mockhelper.js b/javascript/testing/mockhelper.js
index 13cf9887..f2155dba 100644
--- a/javascript/testing/mockhelper.js
+++ b/javascript/testing/mockhelper.js
@@ -13,7 +13,7 @@
  */
 
 /**
- * @fileoverview Mock helper used to faciliate creating Firebase component mocks
+ * @fileoverview Mock helper used to facilitate creating Firebase component mocks
  * for testing.
  */
 
diff --git a/javascript/ui/element/emailtesthelper.js b/javascript/ui/element/emailtesthelper.js
index 8b33d93c..f91aad51 100644
--- a/javascript/ui/element/emailtesthelper.js
+++ b/javascript/ui/element/emailtesthelper.js
@@ -105,7 +105,7 @@ element.EmailTestHelper.prototype.testOnTextChangedClearError_ = function() {
   this.checkErrorShown(error,
       firebaseui.auth.soy2.strings.errorMissingEmail().toString());
 
-  // Emulate that a 'u' is typed in to name input.
+  // Emulate that a 'u' is typed into name input.
   goog.dom.forms.setValue(email, 'u');
   this.fireInputEvent(email, goog.events.KeyCodes.U);
   this.checkInputValid(email);
diff --git a/javascript/ui/element/nametesthelper.js b/javascript/ui/element/nametesthelper.js
index b1bd6034..aacba1af 100644
--- a/javascript/ui/element/nametesthelper.js
+++ b/javascript/ui/element/nametesthelper.js
@@ -89,7 +89,7 @@ element.NameTestHelper.prototype.testOnNameChange_ = function() {
   this.checkErrorShown(error,
       firebaseui.auth.soy2.strings.errorMissingName().toString());
 
-  // Emulate that a 'J' is typed in to name input.
+  // Emulate that a 'J' is typed into name input.
   goog.dom.forms.setValue(name, 'J');
   this.fireInputEvent(name, goog.events.KeyCodes.J);
   this.checkInputValid(name);
diff --git a/javascript/ui/element/newpassword.js b/javascript/ui/element/newpassword.js
index 69377861..73dbfa9e 100644
--- a/javascript/ui/element/newpassword.js
+++ b/javascript/ui/element/newpassword.js
@@ -46,11 +46,11 @@ element.newPassword.getPasswordToggleElement = function() {
 };
 
 
-/** @private {string} The CSS class for the "visiblility on" eye icon. */
+/** @private {string} The CSS class for the "visibility on" eye icon. */
 var CLASS_TOGGLE_ON_ = 'firebaseui-input-toggle-on';
 
 
-/** @private {string} The CSS class for the "visiblility off" eye icon. */
+/** @private {string} The CSS class for the "visibility off" eye icon. */
 var CLASS_TOGGLE_OFF_ = 'firebaseui-input-toggle-off';
 
 
diff --git a/javascript/ui/element/newpasswordtesthelper.js b/javascript/ui/element/newpasswordtesthelper.js
index cf9707c7..1c6b2143 100644
--- a/javascript/ui/element/newpasswordtesthelper.js
+++ b/javascript/ui/element/newpasswordtesthelper.js
@@ -156,7 +156,7 @@ element.NewPasswordTestHelper.prototype.testOnPasswordChange_ = function() {
   this.checkErrorShown(error,
       firebaseui.auth.soy2.strings.errorMissingPassword().toString());
 
-  // Emulate that a 'P' is typed in to new password input.
+  // Emulate that a 'P' is typed into new password input.
   goog.dom.forms.setValue(password, 'P');
   this.fireInputEvent(password, goog.events.KeyCodes.P);
   this.checkInputValid(password);
diff --git a/javascript/ui/element/phoneconfirmationcodetesthelper.js b/javascript/ui/element/phoneconfirmationcodetesthelper.js
index 31d8f967..b9015a77 100644
--- a/javascript/ui/element/phoneconfirmationcodetesthelper.js
+++ b/javascript/ui/element/phoneconfirmationcodetesthelper.js
@@ -104,7 +104,7 @@ element.PhoneConfirmationCodeTestHelper.prototype.testOnTextChangedClearError_ =
   this.checkInputInvalid(confirmationCode);
   this.checkErrorShown(error, errorMessage);
 
-  // Emulate that a '1' is typed in to the phone number input. The error should
+  // Emulate that a '1' is typed into the phone number input. The error should
   // be cleared.
   goog.dom.forms.setValue(confirmationCode, '1');
   this.fireInputEvent(confirmationCode, goog.events.KeyCodes.NUM_ONE);
diff --git a/javascript/ui/element/phonenumber.js b/javascript/ui/element/phonenumber.js
index 2807fe43..b178ca0b 100644
--- a/javascript/ui/element/phonenumber.js
+++ b/javascript/ui/element/phonenumber.js
@@ -131,7 +131,7 @@ element.phoneNumber.initPhoneNumberElement = function(opt_lookupTree,
     // Get current country ID selected.
     var selectedCountry = firebaseui.auth.data.country.getCountryByKey(
         this.phoneNumberSelectedCountryId_);
-    // Get matching countries if national number countains it.
+    // Get matching countries if national number contains it.
     var countries = lookupTree.search(nationalNumber);
     var predefinedDefaultCountryAvailable =
         element.phoneNumber.isCountryAvailable_(
diff --git a/javascript/ui/element/phonenumbertesthelper.js b/javascript/ui/element/phonenumbertesthelper.js
index 6cf399e6..d78bbe15 100644
--- a/javascript/ui/element/phonenumbertesthelper.js
+++ b/javascript/ui/element/phonenumbertesthelper.js
@@ -126,7 +126,7 @@ element.PhoneNumberTestHelper.prototype.testOnTextChangedClearError_ =
   this.checkInputInvalid(phoneNumber);
   this.checkErrorShown(error, errorMessage);
 
-  // Emulate that a '1' is typed in to the phone number input. The error should
+  // Emulate that a '1' is typed into the phone number input. The error should
   // be cleared.
   goog.dom.forms.setValue(phoneNumber, '1');
   this.fireInputEvent(phoneNumber, goog.events.KeyCodes.NUM_ONE);
@@ -144,7 +144,7 @@ element.PhoneNumberTestHelper.prototype.testOnCodeInputWithNationalNumber_ =
 
   // Country selector defaults to US.
   assertEquals('\u200e+1', countrySelector.textContent);
-  // Emulate that a '+1' is typed in to the phone number input. Make sure
+  // Emulate that a '+1' is typed into the phone number input. Make sure
   // US is country selected.
   goog.dom.forms.setValue(phoneNumber, '+1');
   this.fireInputEvent(phoneNumber, goog.events.KeyCodes.PLUS_SIGN);
diff --git a/javascript/ui/page/base.js b/javascript/ui/page/base.js
index ff9d4735..6b826d2f 100644
--- a/javascript/ui/page/base.js
+++ b/javascript/ui/page/base.js
@@ -188,7 +188,7 @@ firebaseui.auth.ui.page.Base.EventType = {
 
 
 /**
- * @return {?string} The identifier for the urrent page.
+ * @return {?string} The identifier for the current page.
  */
 firebaseui.auth.ui.page.Base.prototype.getPageId = function() {
   return this.pageId_;
diff --git a/javascript/ui/page/blank.js b/javascript/ui/page/blank.js
index 28af20da..6068ee51 100644
--- a/javascript/ui/page/blank.js
+++ b/javascript/ui/page/blank.js
@@ -24,7 +24,7 @@ goog.requireType('goog.dom.DomHelper');
 
 
 /**
- * Blank page UI componenet.
+ * Blank page UI component.
  */
 firebaseui.auth.ui.page.Blank = class extends firebaseui.auth.ui.page.Base {
   /**
diff --git a/javascript/ui/page/callback.js b/javascript/ui/page/callback.js
index 3674daf4..b8e7d7ed 100644
--- a/javascript/ui/page/callback.js
+++ b/javascript/ui/page/callback.js
@@ -25,7 +25,7 @@ goog.requireType('goog.dom.DomHelper');
 
 
 /**
- * Callback page UI componenet.
+ * Callback page UI component.
  */
 firebaseui.auth.ui.page.Callback = class extends firebaseui.auth.ui.page.Base {
   /**
diff --git a/javascript/ui/page/emaillinksigninlinking_test.js b/javascript/ui/page/emaillinksigninlinking_test.js
index d989cd31..662c5b73 100644
--- a/javascript/ui/page/emaillinksigninlinking_test.js
+++ b/javascript/ui/page/emaillinksigninlinking_test.js
@@ -95,7 +95,7 @@ function testInitialFocus() {
 function testEmailLinkSignInLinking_pageEvents() {
   // Run page event tests.
   // Dispose previously created container since test must run before rendering
-  // the component in docoument.
+  // the component in document.
   component.dispose();
   // Initialize component.
   component = new firebaseui.auth.ui.page.EmailLinkSignInLinking(
diff --git a/javascript/ui/page/emaillinksigninlinkingdifferentdevice_test.js b/javascript/ui/page/emaillinksigninlinkingdifferentdevice_test.js
index 3e4da0a4..02c946d0 100644
--- a/javascript/ui/page/emaillinksigninlinkingdifferentdevice_test.js
+++ b/javascript/ui/page/emaillinksigninlinkingdifferentdevice_test.js
@@ -96,7 +96,7 @@ function testInitialFocus() {
 function testEmailLinkSignInLinkingDifferentDevice_pageEvents() {
   // Run page event tests.
   // Dispose previously created container since test must run before rendering
-  // the component in docoument.
+  // the component in document.
   component.dispose();
   // Initialize component.
   component = new firebaseui.auth.ui.page.EmailLinkSignInLinkingDifferentDevice(
diff --git a/javascript/ui/page/emaillinksigninsent.js b/javascript/ui/page/emaillinksigninsent.js
index ecee3886..97065dad 100644
--- a/javascript/ui/page/emaillinksigninsent.js
+++ b/javascript/ui/page/emaillinksigninsent.js
@@ -32,7 +32,7 @@ firebaseui.auth.ui.page.EmailLinkSignInSent =
     class extends firebaseui.auth.ui.page.Base {
   /**
    * @param {string} email The email formerly used to sign in.
-   * @param {function()} onTroubleGetingEmailLinkClick Callback to invoke when
+   * @param {function()} onTroubleGettingEmailLinkClick Callback to invoke when
    *     the trouble getting email link is clicked.
    * @param {function()} onCancelClick Callback to invoke when the back button
    *     is clicked.
@@ -43,7 +43,7 @@ firebaseui.auth.ui.page.EmailLinkSignInSent =
    * @param {?goog.dom.DomHelper=} opt_domHelper Optional DOM helper.
    */
   constructor(
-      email, onTroubleGetingEmailLinkClick, onCancelClick, opt_tosCallback,
+      email, onTroubleGettingEmailLinkClick, onCancelClick, opt_tosCallback,
       opt_privacyPolicyCallback, opt_domHelper) {
     // Extend base page class and render email link sign in sent soy template.
     super(
@@ -52,7 +52,7 @@ firebaseui.auth.ui.page.EmailLinkSignInSent =
           tosCallback: opt_tosCallback,
           privacyPolicyCallback: opt_privacyPolicyCallback
         });
-    this.onTroubleGetingEmailLinkClick_ = onTroubleGetingEmailLinkClick;
+    this.onTroubleGettingEmailLinkClick_ = onTroubleGettingEmailLinkClick;
     this.onCancelClick_ = onCancelClick;
   }
 
@@ -67,7 +67,7 @@ firebaseui.auth.ui.page.EmailLinkSignInSent =
     // Handle action event for trouble getting email link.
     firebaseui.auth.ui.element.listenForActionEvent(
         this, this.getTroubleGettingEmailLink(), function(e) {
-          self.onTroubleGetingEmailLinkClick_();
+          self.onTroubleGettingEmailLinkClick_();
         });
     // Set initial focus on the cancel button.
     this.getSecondaryLinkElement().focus();
@@ -83,7 +83,7 @@ firebaseui.auth.ui.page.EmailLinkSignInSent =
 
   /** @override */
   disposeInternal() {
-    this.onTroubleGetingEmailLinkClick_ = null;
+    this.onTroubleGettingEmailLinkClick_ = null;
     this.onCancelClick_ = null;
     super.disposeInternal();
   }
diff --git a/javascript/ui/page/emaillinksigninsent_test.js b/javascript/ui/page/emaillinksigninsent_test.js
index 1736dde2..54a24944 100644
--- a/javascript/ui/page/emaillinksigninsent_test.js
+++ b/javascript/ui/page/emaillinksigninsent_test.js
@@ -44,7 +44,7 @@ var pageTestHelper =
     new firebaseui.auth.ui.page.PageTestHelper().registerTests();
 
 var troubleGettingEmailClicked;
-var onTroubleGetingEmailLinkClick;
+var onTroubleGettingEmailLinkClick;
 
 
 function setUp() {
@@ -52,14 +52,14 @@ function setUp() {
   mockClock = new goog.testing.MockClock();
   mockClock.install();
   troubleGettingEmailClicked = false;
-  onTroubleGetingEmailLinkClick = function() {
+  onTroubleGettingEmailLinkClick = function() {
     troubleGettingEmailClicked = true;
   };
   root = goog.dom.createDom(goog.dom.TagName.DIV);
   document.body.appendChild(root);
   component = new firebaseui.auth.ui.page.EmailLinkSignInSent(
       'user@example.com',
-      onTroubleGetingEmailLinkClick,
+      onTroubleGettingEmailLinkClick,
       goog.bind(
           firebaseui.auth.ui.element.FormTestHelper.prototype.onLinkClick,
           formTestHelper),
@@ -90,10 +90,10 @@ function tearDown() {
 
 
 function testEmailLinkSignInSent_troubleGettingEmailLinkClicked() {
-  var troubleGettingEmaillink = component.getTroubleGettingEmailLink();
-  assertNotNull(troubleGettingEmaillink);
+  var troubleGettingEmailLink = component.getTroubleGettingEmailLink();
+  assertNotNull(troubleGettingEmailLink);
   assertFalse(troubleGettingEmailClicked);
-  goog.testing.events.fireClickSequence(troubleGettingEmaillink);
+  goog.testing.events.fireClickSequence(troubleGettingEmailLink);
   assertTrue(troubleGettingEmailClicked);
 }
 
@@ -113,7 +113,7 @@ function testEmailLinkSignInSent_pageEvents() {
   // Initialize component.
   component = new firebaseui.auth.ui.page.EmailLinkSignInSent(
       'user@example.com',
-      onTroubleGetingEmailLinkClick,
+      onTroubleGettingEmailLinkClick,
       goog.bind(
           firebaseui.auth.ui.element.FormTestHelper.prototype.onLinkClick,
           formTestHelper));
diff --git a/javascript/ui/page/emailmismatch_test.js b/javascript/ui/page/emailmismatch_test.js
index 0317897a..83fb12ea 100644
--- a/javascript/ui/page/emailmismatch_test.js
+++ b/javascript/ui/page/emailmismatch_test.js
@@ -99,7 +99,7 @@ function testInitialFocus() {
 function testEmailMismatch_pageEvents() {
   // Run page event tests.
   // Dispose previously created container since test must run before rendering
-  // the component in docoument.
+  // the component in document.
   component.dispose();
   // Initialize component.
   component = new firebaseui.auth.ui.page.EmailMismatch(
diff --git a/javascript/ui/page/federatedlinking_test.js b/javascript/ui/page/federatedlinking_test.js
index 001c0c5b..cc09f537 100644
--- a/javascript/ui/page/federatedlinking_test.js
+++ b/javascript/ui/page/federatedlinking_test.js
@@ -99,7 +99,7 @@ function testInitialFocus() {
 function testFederatedLinking_pageEvents() {
   // Run page event tests.
   // Dispose previously created container since test must run before rendering
-  // the component in docoument.
+  // the component in document.
   component.dispose();
   // Initialize component.
   component = new firebaseui.auth.ui.page.FederatedLinking(
diff --git a/javascript/ui/page/notice.js b/javascript/ui/page/notice.js
index 20a67cec..065529c4 100644
--- a/javascript/ui/page/notice.js
+++ b/javascript/ui/page/notice.js
@@ -40,7 +40,7 @@ goog.requireType('goog.dom.DomHelper');
 
 
 /**
- * A UI component represnting a notice.
+ * A UI component representing a notice.
  * @param {function(ARG_TYPES, null=, Object.<string, *>=):*} template The Soy
  *     template for the component.
  * @param {ARG_TYPES=} opt_templateData The data for the template.
diff --git a/javascript/ui/page/notice_test.js b/javascript/ui/page/notice_test.js
index 4be4de1b..e4477ca6 100644
--- a/javascript/ui/page/notice_test.js
+++ b/javascript/ui/page/notice_test.js
@@ -107,7 +107,7 @@ function testInitialFocus() {
 function testPasswordRecoveryEmailSent_pageEvents() {
   // Run page event tests.
   // Dispose previously created container since test must run before rendering
-  // the component in docoument.
+  // the component in document.
   component.dispose();
   // Initialize component.
   component = new firebaseui.auth.ui.page.PasswordRecoveryEmailSent(
diff --git a/javascript/ui/page/passwordlinking_test.js b/javascript/ui/page/passwordlinking_test.js
index 17976ac5..70b68c7a 100644
--- a/javascript/ui/page/passwordlinking_test.js
+++ b/javascript/ui/page/passwordlinking_test.js
@@ -111,7 +111,7 @@ function testSubmitOnPasswordEnter() {
 function testPasswordLinking_pageEvents() {
   // Run page event tests.
   // Dispose previously created container since test must run before rendering
-  // the component in docoument.
+  // the component in document.
   component.dispose();
   // Initialize component.
   component = new firebaseui.auth.ui.page.PasswordLinking(
diff --git a/javascript/ui/page/passwordrecovery_test.js b/javascript/ui/page/passwordrecovery_test.js
index 9e2dbeb7..764de7a9 100644
--- a/javascript/ui/page/passwordrecovery_test.js
+++ b/javascript/ui/page/passwordrecovery_test.js
@@ -112,7 +112,7 @@ function testInitialFocus_email() {
 function testPasswordRecovery_pageEvents() {
   // Run page event tests.
   // Dispose previously created container since test must run before rendering
-  // the component in docoument.
+  // the component in document.
   component.dispose();
   // Initialize component.
   component = new firebaseui.auth.ui.page.PasswordRecovery(
diff --git a/javascript/ui/page/passwordreset_test.js b/javascript/ui/page/passwordreset_test.js
index 96e27c6d..4949cd93 100644
--- a/javascript/ui/page/passwordreset_test.js
+++ b/javascript/ui/page/passwordreset_test.js
@@ -97,7 +97,7 @@ function testSubmitOnNewPasswordEnter() {
 function testPasswordReset_pageEvents() {
   // Run page event tests.
   // Dispose previously created container since test must run before rendering
-  // the component in docoument.
+  // the component in document.
   component.dispose();
   // Initialize component.
   component = new firebaseui.auth.ui.page.PasswordReset(
diff --git a/javascript/ui/page/passwordsignin_test.js b/javascript/ui/page/passwordsignin_test.js
index 27337324..c84cf5c2 100644
--- a/javascript/ui/page/passwordsignin_test.js
+++ b/javascript/ui/page/passwordsignin_test.js
@@ -220,7 +220,7 @@ function testPasswordSignIn_footer_noUrl() {
 function testPasswordSignIn_pageEvents() {
   // Run page event tests.
   // Dispose previously created container since test must run before rendering
-  // the component in docoument.
+  // the component in document.
   component.dispose();
   // Initialize component.
   component = new firebaseui.auth.ui.page.PasswordSignIn(
diff --git a/javascript/ui/page/providermatchbyemail_test.js b/javascript/ui/page/providermatchbyemail_test.js
index dc58ec60..d0a8857e 100644
--- a/javascript/ui/page/providermatchbyemail_test.js
+++ b/javascript/ui/page/providermatchbyemail_test.js
@@ -133,7 +133,7 @@ function testProviderMatchByEmail_noTosPp() {
 function testProviderMatchByEmail_pageEvents() {
   // Run page event tests.
   // Dispose previously created container since test must run before rendering
-  // the component in docoument.
+  // the component in document.
   component.dispose();
   // Initialize component.
   component = new firebaseui.auth.ui.page.ProviderMatchByEmail(
diff --git a/javascript/ui/page/providersignin_test.js b/javascript/ui/page/providersignin_test.js
index 3befc306..25c39d86 100644
--- a/javascript/ui/page/providersignin_test.js
+++ b/javascript/ui/page/providersignin_test.js
@@ -88,7 +88,7 @@ testSuite({
   testProviderSignIn_pageEvents() {
     // Run page event tests.
     // Dispose previously created container since test must run before rendering
-    // the component in docoument.
+    // the component in document.
     component.dispose();
     // Initialize component.
     component = new ProviderSignIn(
diff --git a/javascript/ui/page/signin_test.js b/javascript/ui/page/signin_test.js
index bf13bd50..6efba46a 100644
--- a/javascript/ui/page/signin_test.js
+++ b/javascript/ui/page/signin_test.js
@@ -188,7 +188,7 @@ function testSignIn_footerOnly_noUrl() {
 function testSignIn_pageEvents() {
   // Run page event tests.
   // Dispose previously created container since test must run before rendering
-  // the component in docoument.
+  // the component in document.
   component.dispose();
   // Initialize component.
   component = new firebaseui.auth.ui.page.SignIn(
diff --git a/javascript/ui/page/spinner.js b/javascript/ui/page/spinner.js
index 789543b7..2f565fca 100644
--- a/javascript/ui/page/spinner.js
+++ b/javascript/ui/page/spinner.js
@@ -24,7 +24,7 @@ goog.requireType('goog.dom.DomHelper');
 
 
 /**
- * Spinner page UI componenet.
+ * Spinner page UI component.
  */
 firebaseui.auth.ui.page.Spinner = class extends firebaseui.auth.ui.page.Base {
   /**
diff --git a/javascript/ui/page/unsupportedprovider_test.js b/javascript/ui/page/unsupportedprovider_test.js
index 399c66bf..64e971aa 100644
--- a/javascript/ui/page/unsupportedprovider_test.js
+++ b/javascript/ui/page/unsupportedprovider_test.js
@@ -96,7 +96,7 @@ function testInitialFocus() {
 function testUnsupportedProvider_pageEvents() {
   // Run page event tests.
   // Dispose previously created container since test must run before rendering
-  // the component in docoument.
+  // the component in document.
   component.dispose();
   // Initialize component.
   component = new firebaseui.auth.ui.page.UnsupportedProvider(
diff --git a/javascript/utils/acclient.js b/javascript/utils/acclient.js
index a31ee784..5e93b906 100644
--- a/javascript/utils/acclient.js
+++ b/javascript/utils/acclient.js
@@ -185,7 +185,7 @@ firebaseui.auth.acClient.tryStoreAccount =
   firebaseui.auth.acClient.api_.checkAccountExist(acAccount,
       function(exist, error) {
     if (!exist && !error) {
-      // It doens't exist in accountchooser.com.
+      // It doesn't exist in accountchooser.com.
       firebaseui.auth.acClient.api_.store([acAccount], options);
     } else if (!error) {
       // It exists. Check whether we should update it.
@@ -212,7 +212,7 @@ firebaseui.auth.acClient.tryStoreAccount =
 
 
 /**
- * A dummy accountchooser.com API implmentation which is used if
+ * A dummy accountchooser.com API implementation which is used if
  * accountchooser.com is not available, for instance, the user agent doesn't
  * support SNI.
  * @implements {accountchooser.Api}
@@ -283,7 +283,7 @@ firebaseui.auth.acClient.DummyApi = class {
 
 
   /**
-   * Checkes if accountchooser.com is disabled. The callback is always invoked
+   * Checks if accountchooser.com is disabled. The callback is always invoked
    * with a `true`.
    *
    * @param {function(boolean=, Object=)} callback The callback function.
@@ -294,7 +294,7 @@ firebaseui.auth.acClient.DummyApi = class {
 
 
   /**
-   * Checkes if the accountchooser.com is empty. The callback is always invoked
+   * Checks if the accountchooser.com is empty. The callback is always invoked
    * with a service unavailable error.
    *
    * @param {function(boolean=, Object=)} callback The callback function.
@@ -305,7 +305,7 @@ firebaseui.auth.acClient.DummyApi = class {
 
 
   /**
-   * Checkes if the account is in accountchooser.com. The callback is always
+   * Checks if the account is in accountchooser.com. The callback is always
    * invoked with a service unavailable error.
    *
    * @param {Object} account The account to check.
@@ -317,7 +317,7 @@ firebaseui.auth.acClient.DummyApi = class {
 
 
   /**
-   * Checkes if the account should be updated. The callback is always invoked
+   * Checks if the account should be updated. The callback is always invoked
    * with a service unavailable error.
    *
    * @param {Object} account The account to check.
diff --git a/javascript/utils/pendingemailcredential_test.js b/javascript/utils/pendingemailcredential_test.js
index d0ffc3f5..de1b2736 100644
--- a/javascript/utils/pendingemailcredential_test.js
+++ b/javascript/utils/pendingemailcredential_test.js
@@ -54,7 +54,7 @@ function setUp() {
   credentialObject = {
     'providerId': 'google.com',
     'signInMethod': 'google.com',
-    'oauthAcessToken': 'ACCESS_TOKEN'
+    'oauthAccessToken': 'ACCESS_TOKEN'
   };
   credential = {
     'providerId': 'google.com',
diff --git a/javascript/utils/phonenumber.js b/javascript/utils/phonenumber.js
index 58ebdbe3..4208a893 100644
--- a/javascript/utils/phonenumber.js
+++ b/javascript/utils/phonenumber.js
@@ -47,7 +47,7 @@ firebaseui.auth.PhoneNumber = class {
     // but that dependency is too large to bundle with FirebaseUI-web, so we
     // will attempt a best effort approach to parse the 2 components.
     var trimmedPhoneNumber = goog.string.trim(phoneNumberStr);
-    // Get matching countries if national number countains it.
+    // Get matching countries if national number contains it.
     var countries =
         firebaseui.auth.data.country.LOOKUP_TREE.search(trimmedPhoneNumber);
     if (countries.length > 0) {
diff --git a/javascript/utils/sni.js b/javascript/utils/sni.js
index 00583dcb..102b31bd 100644
--- a/javascript/utils/sni.js
+++ b/javascript/utils/sni.js
@@ -65,7 +65,7 @@ firebaseui.auth.sni.REGEX_SAFARI_UA_ =
 
 
 /**
- * RE for matching old Safari's user agent (Sarafi 1 & 2).
+ * RE for matching old Safari's user agent (Safari 1 & 2).
  * @const {RegExp}
  * @private
  */
@@ -185,7 +185,7 @@ firebaseui.auth.sni.isSupported = function(opt_userAgent) {
       if (ua.indexOf('Opera Mobi') >= 0) {
         return ua.indexOf('Android') >= 0 && version.ge('10.1');
       }
-      // Desktop Opera 8.0 or later suppports SNI.
+      // Desktop Opera 8.0 or later supports SNI.
       return version.ge('8.0');
     } else if (result = ua.match(firebaseui.auth.sni.REGEX_FIREFOX_UA_)) {
       // Firefox 2.0 or later supports SNI.
diff --git a/javascript/utils/storage.js b/javascript/utils/storage.js
index a87eeb6e..b192bfe6 100644
--- a/javascript/utils/storage.js
+++ b/javascript/utils/storage.js
@@ -292,7 +292,7 @@ storage.hasRedirectStatus = function(opt_id) {
 
 /**
  * Returns the pending redirect status. Returns null if there is no unresolved
- * redirect opertions.
+ * redirect operations.
  *
  * @param {string=} opt_id When operating in multiple app mode, this ID
  *     associates storage values with specific apps.
@@ -363,10 +363,10 @@ storage.getEmailForSignIn = function(encryptionKey, opt_id) {
   var email = null;
   if (encryptedEmailObject) {
     try {
-      var serilizedEmailObject = firebaseui.auth.crypt.aesDecrypt(
+      var serializedEmailObject = firebaseui.auth.crypt.aesDecrypt(
           encryptionKey,
           /** @type {string} */ (encryptedEmailObject));
-      var emailObject = JSON.parse(serilizedEmailObject);
+      var emailObject = JSON.parse(serializedEmailObject);
       email = /** @type {?string} */ (
           (emailObject && emailObject[storage.EMAIL_FOR_SIGN_IN_KEY_]) || null);
     } catch (e) {
@@ -463,7 +463,7 @@ storage.removeEncryptedPendingCredential = function(opt_id) {
 
 
 /**
- * Stores the encrpted pending email credential for the specified application
+ * Stores the encrypted pending email credential for the specified application
  * ID.
  *
  * @param {string} encryptionKey The encryption key to encrypt the credential.
diff --git a/javascript/utils/util.js b/javascript/utils/util.js
index b93f35a1..a129297d 100644
--- a/javascript/utils/util.js
+++ b/javascript/utils/util.js
@@ -163,7 +163,7 @@ firebaseui.auth.util.isMobileBrowser = function() {
  * @return {boolean} True if the browser supports CORS.
  */
 firebaseui.auth.util.supportsCors = function() {
-  // Among all supported browsers, onluy IE8 and IE9 don't support CORS.
+  // Among all supported browsers, only IE8 and IE9 don't support CORS.
   return !goog.userAgent.IE || // Not IE.
       !goog.userAgent.DOCUMENT_MODE || // No document mode == IE Edge
       goog.userAgent.DOCUMENT_MODE > 9;
@@ -221,7 +221,7 @@ firebaseui.auth.util.popup =
 /**
  * Gets the element in the current document by the query selector.
  * If an Element is passed in, it is returned.
- * An `Error` is thrown if the element can not be found.
+ * An `Error` is thrown if the element cannot be found.
  *
  * @param {string|Element} element The element or the query selector.
  * @param {string=} opt_notFoundDesc Error description when element not
diff --git a/javascript/utils/util_test.js b/javascript/utils/util_test.js
index 090bf858..b5b6e46a 100644
--- a/javascript/utils/util_test.js
+++ b/javascript/utils/util_test.js
@@ -271,7 +271,7 @@ function testFilterProperties_initialValue() {
   const sourceObj = Object.assign({property4: 'd'}, expectedObj);
 
   // The additional properties should be removed, the properties on initial
-  // value shoud be copied over.
+  // value should be copied over.
   assertObjectEquals(
       {
         property1: 'a',
@@ -287,7 +287,7 @@ function testFilterProperties_initialValue() {
 
 function testFilterProperties_initialValueOverridden() {
   // Test that expected properties are copied over and properties on initial
-  // value are overriden if present on the source object.
+  // value are overridden if present on the source object.
   const expectedObj = {
     property1: 'a',
     property2: 'b',
diff --git a/javascript/widgets/authui.js b/javascript/widgets/authui.js
index 45391c20..4ae54178 100644
--- a/javascript/widgets/authui.js
+++ b/javascript/widgets/authui.js
@@ -350,7 +350,7 @@ firebaseui.auth.AuthUI.prototype.getRedirectResult = function() {
             }));
       }
     };
-    // Initialize current user if auto upgrade is enabled beforing running
+    // Initialize current user if auto upgrade is enabled before running
     // callback and returning result.
     this.getRedirectResult_ = this.initializeForAutoUpgrade_(cb);
   }
@@ -642,7 +642,7 @@ firebaseui.auth.AuthUI.prototype.initializeForAutoUpgrade_ = function(cb) {
   // If initial state already determined, run callback with the current
   // upgradeable user and return its result.
   if (this.initialStateReady_) {
-    return cb(this.getUpgradableUser_());
+    return cb(this.getUpgradeableUser_());
   }
   // On reset, clear initial state as Auth state listener will be unsubscribed.
   this.registerPending(function() {
@@ -658,7 +658,7 @@ firebaseui.auth.AuthUI.prototype.initializeForAutoUpgrade_ = function(cb) {
         // Resolve promise only initially with initial upgradeable user.
         if (!self.initialStateReady_) {
           self.initialStateReady_ = true;
-          resolve(cb(self.getUpgradableUser_()));
+          resolve(cb(self.getUpgradeableUser_()));
         }
       }));
     });
@@ -680,7 +680,7 @@ firebaseui.auth.AuthUI.prototype.initializeForAutoUpgrade_ = function(cb) {
  *     null otherwise.
  * @private
  */
-firebaseui.auth.AuthUI.prototype.getUpgradableUser_ = function() {
+firebaseui.auth.AuthUI.prototype.getUpgradeableUser_ = function() {
   // Check if instance is already destroyed.
   this.checkIfDestroyed_();
   // This is typically run after initial onAuthStateChanged listener is
@@ -1076,7 +1076,7 @@ firebaseui.auth.AuthUI.prototype.sendSignInLinkToEmail =
     return /** @type {!firebase.Promise<void>} */ (
         self.getAuth().sendSignInLinkToEmail(email, actionCodeSettings));
   };
-  // Initialize current user if auto upgrade is enabled beforing running
+  // Initialize current user if auto upgrade is enabled before running
   // callback and returning result.
   return this.initializeForAutoUpgrade_(cb).then(function() {
     firebaseui.auth.storage.setEmailForSignIn(sid, email, self.getAppId());
@@ -1326,7 +1326,7 @@ firebaseui.auth.AuthUI.prototype.startSignInWithEmailAndPassword =
             return result;
           }
         };
-        // Initialize current user if auto upgrade is enabled beforing running
+        // Initialize current user if auto upgrade is enabled before running
         // callback and returning result.
         return self.initializeForAutoUpgrade_(cb);
       }));
@@ -1362,7 +1362,7 @@ firebaseui.auth.AuthUI.prototype.startCreateUserWithEmailAndPassword =
               email, password));
     }
   };
-  // Initialize current user if auto upgrade is enabled beforing running
+  // Initialize current user if auto upgrade is enabled before running
   // callback and returning result.
   return this.initializeForAutoUpgrade_(cb);
 };
@@ -1409,7 +1409,7 @@ firebaseui.auth.AuthUI.prototype.startSignInWithCredential =
       return self.getAuth().signInWithCredential(credential);
     }
   };
-  // Initialize current user if auto upgrade is enabled beforing running
+  // Initialize current user if auto upgrade is enabled before running
   // callback and returning result.
   return this.initializeForAutoUpgrade_(cb);
 };
@@ -1459,7 +1459,7 @@ firebaseui.auth.AuthUI.prototype.startSignInWithPopup = function(provider) {
       return self.getAuth().signInWithPopup(provider);
     }
   };
-  // Initialize current user if auto upgrade is enabled beforing running
+  // Initialize current user if auto upgrade is enabled before running
   // callback and returning result.
   return this.initializeForAutoUpgrade_(cb);
 };
@@ -1499,7 +1499,7 @@ firebaseui.auth.AuthUI.prototype.startSignInWithRedirect = function(provider) {
       return self.getAuth().signInWithRedirect(provider);
     }
   };
-  // Initialize current user if auto upgrade is enabled beforing running
+  // Initialize current user if auto upgrade is enabled before running
   // callback and returning result.
   return this.initializeForAutoUpgrade_(cb).then(
       function() {
@@ -1556,7 +1556,7 @@ firebaseui.auth.AuthUI.prototype.startSignInWithPhoneNumber =
           });
     }
   };
-  // Initialize current user if auto upgrade is enabled beforing running
+  // Initialize current user if auto upgrade is enabled before running
   // callback and returning result.
   return this.initializeForAutoUpgrade_(cb);
 };
@@ -1669,7 +1669,7 @@ firebaseui.auth.AuthUI.prototype.finishSignInAndRetrieveDataWithAuthResult =
       });
     }
   };
-  // Initialize current user if auto upgrade is enabled beforing running
+  // Initialize current user if auto upgrade is enabled before running
   // callback and returning result.
   return this.initializeForAutoUpgrade_(cb);
 };
diff --git a/javascript/widgets/authui_test.js b/javascript/widgets/authui_test.js
index ec541c32..33ab1a04 100644
--- a/javascript/widgets/authui_test.js
+++ b/javascript/widgets/authui_test.js
@@ -587,7 +587,7 @@ function testGetInstance() {
   assertEquals(app2, firebaseui.auth.AuthUI.getInstance('id2'));
   assertEquals(app3, firebaseui.auth.AuthUI.getInstance());
   assertNull(firebaseui.auth.AuthUI.getInstance('id0'));
-  // Trying to create a new instance with an existing appId wil throw the
+  // Trying to create a new instance with an existing appId will throw the
   // expected error.
   var error = assertThrows(function() {
     new firebaseui.auth.AuthUI(testAuth1, 'id1');
@@ -2220,7 +2220,7 @@ function testUpgradeWithEmailLink_emailExists_pendingCredential_conflict() {
       'isNewUser': false
     }
   };
-  // Simulate anononymous user signed in for upgrade flow.
+  // Simulate anonymous user signed in for upgrade flow.
   app.getExternalAuth().setUser(anonymousUser);
 
   app.upgradeWithEmailLink(
@@ -2302,7 +2302,7 @@ function testUpgradeWithEmailLink_newEmail_success() {
       'isNewUser': false
     }
   };
-  // Simulate anononymous user signed in for upgrade flow.
+  // Simulate anonymous user signed in for upgrade flow.
   app.getExternalAuth().setUser(anonymousUser);
 
   app.upgradeWithEmailLink(app.getExternalAuth().currentUser, email, link)
@@ -2345,7 +2345,7 @@ function testUpgradeWithEmailLink_error() {
   app.getAuth().install();
   app.getExternalAuth().install();
   asyncTestCase.waitForSignals(1);
-  // Simulate anononymous user signed in for upgrade flow.
+  // Simulate anonymous user signed in for upgrade flow.
   app.getExternalAuth().setUser(anonymousUser);
 
   // Confirm backend error passed through to client.
@@ -4095,7 +4095,7 @@ function testStartSignInAnonymously_success() {
 }
 
 
-function testStartSignInAnonymously_upgradeAnon_isAnonmous_success() {
+function testStartSignInAnonymously_upgradeAnon_isAnonymous_success() {
   testApp = new firebaseui.auth.testing.FakeAppClient(options);
   testAuth = testApp.auth();
   app = new firebaseui.auth.AuthUI(testAuth, 'id0');
@@ -4705,7 +4705,7 @@ function testfinishSignInAndRetrieveDataWithAuthResult_upgradeAnon_credInUse() {
 }
 
 
-function testfinishSignInAndRetrieveDataWithAuthResult_upgrdAnon_emailInUse() {
+function testfinishSignInAndRetrieveDataWithAuthResult_upgradeAnon_emailInUse() {
   var expectedError = {
     'code': 'auth/email-already-in-use',
     'message': 'MESSAGE',
diff --git a/javascript/widgets/config.js b/javascript/widgets/config.js
index 3b000d3d..574b9eac 100644
--- a/javascript/widgets/config.js
+++ b/javascript/widgets/config.js
@@ -485,7 +485,7 @@ class Config {
 
   /**
    * Returns the default country to select for phone authentication.
-   * @return {?string} The default naional number, or null if phone auth is not
+   * @return {?string} The default national number, or null if phone auth is not
    *     enabled.
    */
   getPhoneAuthDefaultNationalNumber() {
diff --git a/javascript/widgets/config_test.js b/javascript/widgets/config_test.js
index 79b51fd0..72cfe5e9 100644
--- a/javascript/widgets/config_test.js
+++ b/javascript/widgets/config_test.js
@@ -1362,7 +1362,7 @@ testSuite({
     tosCallback = () => {};
     config.update('tosUrl', tosCallback);
     assertEquals(tosCallback, config.getTosUrl());
-    // Tests if invalid tyoe is passed to tosUrl config.
+    // Tests if invalid type is passed to tosUrl config.
     config.update('tosUrl', 123456);
     assertNull(config.getTosUrl());
   },
@@ -1398,7 +1398,7 @@ testSuite({
     privacyPolicyCallback = () => {};
     config.update('privacyPolicyUrl', privacyPolicyCallback);
     assertEquals(privacyPolicyCallback, config.getPrivacyPolicyUrl());
-    // Tests if invalid tyoe is passed to tosUrl config.
+    // Tests if invalid type is passed to tosUrl config.
     config.update('privacyPolicyUrl', 123456);
     assertNull(config.getPrivacyPolicyUrl());
   },
diff --git a/javascript/widgets/firebaseuihandler.js b/javascript/widgets/firebaseuihandler.js
index 730f849d..f522c5c8 100644
--- a/javascript/widgets/firebaseuihandler.js
+++ b/javascript/widgets/firebaseuihandler.js
@@ -604,7 +604,7 @@ function getLocalizedErrorMessage(code) {
 /**
  * The project level configuration object.
  * authDomain: The Auth domain.
- * tenants: The tenant level configuations keyed by tenant ID or '_' for
+ * tenants: The tenant level configurations keyed by tenant ID or '_' for
  *     top-level project config.
  * @typedef {{
  *   authDomain: string,
diff --git a/javascript/widgets/handler/actioncode.js b/javascript/widgets/handler/actioncode.js
index f85e921a..db71eab2 100644
--- a/javascript/widgets/handler/actioncode.js
+++ b/javascript/widgets/handler/actioncode.js
@@ -372,7 +372,7 @@ firebaseui.auth.widget.handler.handleRevertSecondFactorAddition =
  * @param {!firebaseui.auth.AuthUI} app The current Firebase UI instance whose
  *     configuration is used.
  * @param {!Element} container The container DOM element.
- * @param {string} email The email of the acount.
+ * @param {string} email The email of the account.
  * @param {!firebase.auth.MultiFactorInfo} multiFactorInfo The info of
  *     multi-factor to be unenrolled.
  * @private
diff --git a/javascript/widgets/handler/actioncode_test.js b/javascript/widgets/handler/actioncode_test.js
index d09a2d19..5500f105 100644
--- a/javascript/widgets/handler/actioncode_test.js
+++ b/javascript/widgets/handler/actioncode_test.js
@@ -486,7 +486,7 @@ function testHandleEmailVerification_success() {
 
 
 function testHandleEmailVerification_success_continueButton() {
-  // Test successful email verificaiton with continue button.
+  // Test successful email verification with continue button.
   asyncTestCase.waitForSignals(1);
   var continueButtonCallback = goog.testing.recordFunction();
 
diff --git a/javascript/widgets/handler/callback_test.js b/javascript/widgets/handler/callback_test.js
index 3ed44963..3d7456e6 100644
--- a/javascript/widgets/handler/callback_test.js
+++ b/javascript/widgets/handler/callback_test.js
@@ -2152,7 +2152,7 @@ function testHandleCallback_operationNotSupported_multiProviders() {
   // Test when callback handler is triggered with multiple providers and
   // the operation is not supported in this environment.
   asyncTestCase.waitForSignals(1);
-  // Set mutliple providers.
+  // Set multiple providers.
   app.setConfig({
     'signInOptions': [
       firebase.auth.EmailAuthProvider.PROVIDER_ID,
diff --git a/javascript/widgets/handler/common.js b/javascript/widgets/handler/common.js
index 73bb1bca..2170197c 100644
--- a/javascript/widgets/handler/common.js
+++ b/javascript/widgets/handler/common.js
@@ -95,7 +95,7 @@ firebaseui.auth.widget.handler.common.normalizeError =
  *     external Auth instance. If true, current user on external Auth instance
  *     should be passed in from Auth result. Should be true for anonymous
  *     upgrade flow and phone Auth flow since user already logged in on
- *     external Auth instnace.
+ *     external Auth instance.
  * @return {!goog.Promise} A promise that resolves on login completion.
  * @package
  */
@@ -533,7 +533,7 @@ firebaseui.auth.widget.handler.common.getAuthProvider_ = function(
   var customParameters =
       app.getConfig().getProviderCustomParameters(providerId) || {};
   // Some providers accept an email address as a login hint. If the email is
-  // set and if the provider supports it, add it to the custom paramaters.
+  // set and if the provider supports it, add it to the custom parameters.
   if (opt_email) {
     var loginHintKey;
     // Since the name of the parameter is known for Google and GitHub, set this
@@ -869,7 +869,7 @@ firebaseui.auth.widget.handler.common.handleGoogleYoloCredential =
             firebase.auth.GoogleAuthProvider.PROVIDER_ID).length) {
       let email;
       try {
-        // New one-tap API does not return the credential identitifer.
+        // New one-tap API does not return the credential identifier.
         // Parse email from Google ID token.
         const components  = credential.credential.split('.');
         const payloadDecoded = JSON.parse(atob(components[1]));
diff --git a/javascript/widgets/handler/common_test.js b/javascript/widgets/handler/common_test.js
index 9479e790..c2e5ad34 100644
--- a/javascript/widgets/handler/common_test.js
+++ b/javascript/widgets/handler/common_test.js
@@ -209,7 +209,7 @@ function testSetLoggedInWithAuthResult_federatedLinking() {
       // User returned should be the one signed in external Auth instance.
       'user': externalAuth.currentUser,
       'credential': federatedCredential,
-      // Opeartion type for linking flow should still be signIn.
+      // Operation type for linking flow should still be signIn.
       'operationType': 'signIn',
       // isNewUser should be false for linking flow.
       'additionalUserInfo':  {'providerId': 'google.com', 'isNewUser': false}
diff --git a/javascript/widgets/handler/emaillinksigninsent_test.js b/javascript/widgets/handler/emaillinksigninsent_test.js
index 141b8493..6feeff92 100644
--- a/javascript/widgets/handler/emaillinksigninsent_test.js
+++ b/javascript/widgets/handler/emaillinksigninsent_test.js
@@ -57,7 +57,7 @@ function testHandleEmailLinkSignInSent_troubleGettingEmail() {
         firebaseui.auth.storage.getEmailForSignIn('SESSIONID', app.getAppId()));
     // Email link sent page is displayed again after resending the email link.
     assertEmailLinkSignInSentPage();
-    // Verfiy that the same onCancelClick handler is passed from email link
+    // Verify that the same onCancelClick handler is passed from email link
     // sign in sent page to email not received page and then back to email link
     // sign in sent page.
     assertEquals(0, cancelButtonCallback.getCallCount());
@@ -108,7 +108,7 @@ function testHandleEmailLinkSignInSent_troubleGettingEmail_pendingCredential() {
             'SESSIONID', app.getAppId()));
     // Email link sent page is displayed again after resending the email link.
     assertEmailLinkSignInSentPage();
-    // Verfiy that the same onCancelClick handler is passed from email link
+    // Verify that the same onCancelClick handler is passed from email link
     // sign in sent page to email not received page and then back to email link
     // sign in sent page.
     assertEquals(0, cancelButtonCallback.getCallCount());
@@ -165,7 +165,7 @@ function testHandleEmailLinkSignInSent_trouble_pendingCred_anonUpgrade() {
             'SESSIONID', app.getAppId()));
     // Email link sent page is displayed again after resending the email link.
     assertEmailLinkSignInSentPage();
-    // Verfiy that the same onCancelClick handler is passed from email link
+    // Verify that the same onCancelClick handler is passed from email link
     // sign in sent page to email not received page and then back to email link
     // sign in sent page.
     assertEquals(0, cancelButtonCallback.getCallCount());
diff --git a/javascript/widgets/handler/emailmismatch_test.js b/javascript/widgets/handler/emailmismatch_test.js
index 73235d00..c008f748 100644
--- a/javascript/widgets/handler/emailmismatch_test.js
+++ b/javascript/widgets/handler/emailmismatch_test.js
@@ -530,7 +530,7 @@ function testHandleEmailMismatch_signIn_continue_signInWithAuthResultCb() {
 
 
 function testHandleEmailMismatch_linking_cancel() {
-  // Test handlEmailMismatch when cancel button is clicked and the user was
+  // Test handleEmailMismatch when cancel button is clicked and the user was
   // doing the linking flow.
 
   // The credentials returned from the provider.
@@ -558,7 +558,7 @@ function testHandleEmailMismatch_linking_cancel() {
 
 
 function testHandleEmailMismatch_linking_cancel_upgradeAnonymous() {
-  // Test handlEmailMismatch when cancel button is clicked and the user was
+  // Test handleEmailMismatch when cancel button is clicked and the user was
   // doing the linking flow with an eligible anonymous user available.
 
   // Enable anonymous user upgrade.
@@ -593,7 +593,7 @@ function testHandleEmailMismatch_linking_cancel_upgradeAnonymous() {
 
 
 function testHandleEmailMismatch_signIn_cancel() {
-  // Test handlEmailMismatch when cancel button is clicked and the user was
+  // Test handleEmailMismatch when cancel button is clicked and the user was
   // doing the sign-in flow.
 
   // The credentials returned from the provider.
diff --git a/javascript/widgets/handler/emailnotreceived_test.js b/javascript/widgets/handler/emailnotreceived_test.js
index f9087c4d..b6af4f52 100644
--- a/javascript/widgets/handler/emailnotreceived_test.js
+++ b/javascript/widgets/handler/emailnotreceived_test.js
@@ -55,7 +55,7 @@ function testHandleEmailNotReceived_resend() {
     // Email link sent page should be rendered.
     assertEmailLinkSignInSentPage();
 
-    // Verfiy that the onCancelClick handler is passed to email link sign in
+    // Verify that the onCancelClick handler is passed to email link sign in
     // sent page.
     assertEquals(0, cancelButtonCallback.getCallCount());
     // Click cancel button.
@@ -129,7 +129,7 @@ function testHandleEmailNotReceived_resend_pendingCredential() {
             'SESSIONID', app.getAppId()));
     assertEmailLinkSignInSentPage();
 
-    // Verfiy that the onCancelClick handler is passed to email link sign in
+    // Verify that the onCancelClick handler is passed to email link sign in
     // sent page.
     assertEquals(0, cancelButtonCallback.getCallCount());
     // Click cancel button.
@@ -180,7 +180,7 @@ function testHandleEmailNotReceived_resend_pendingCredential_anonUpgrade() {
             'SESSIONID', app.getAppId()));
     assertEmailLinkSignInSentPage();
 
-    // Verfiy that the onCancelClick handler is passed to email link sign in
+    // Verify that the onCancelClick handler is passed to email link sign in
     // sent page.
     assertEquals(0, cancelButtonCallback.getCallCount());
     // Click cancel button.
diff --git a/javascript/widgets/handler/passwordrecovery_test.js b/javascript/widgets/handler/passwordrecovery_test.js
index 001b4ac4..63a35cd5 100644
--- a/javascript/widgets/handler/passwordrecovery_test.js
+++ b/javascript/widgets/handler/passwordrecovery_test.js
@@ -128,7 +128,7 @@ function testHandlePasswordRecovery_emailInvalid() {
 }
 
 
-function testHandlePasswordRecovery_inProccessing() {
+function testHandlePasswordRecovery_inProcessing() {
   firebaseui.auth.widget.handler.handlePasswordRecovery(
       app, container, passwordAccount.getEmail());
   assertPasswordRecoveryPage();
diff --git a/javascript/widgets/handler/passwordsignup_test.js b/javascript/widgets/handler/passwordsignup_test.js
index 31ea264d..1071aa32 100644
--- a/javascript/widgets/handler/passwordsignup_test.js
+++ b/javascript/widgets/handler/passwordsignup_test.js
@@ -682,7 +682,7 @@ function testHandlePasswordSignUp_nameEmpty() {
 }
 
 
-function testHandlePasswordSignUp_passwordEmptyOrMissmatch() {
+function testHandlePasswordSignUp_passwordEmptyOrMismatch() {
   firebaseui.auth.widget.handler.handlePasswordSignUp(
       app, container, passwordAccount.getEmail());
   assertPasswordSignUpPage();
diff --git a/javascript/widgets/handler/prefilledemailsignin_test.js b/javascript/widgets/handler/prefilledemailsignin_test.js
index 1a1bbd27..1afb0b2e 100644
--- a/javascript/widgets/handler/prefilledemailsignin_test.js
+++ b/javascript/widgets/handler/prefilledemailsignin_test.js
@@ -26,7 +26,7 @@ goog.require('firebaseui.auth.widget.handler.handlePrefilledEmailSignIn');
 goog.require('firebaseui.auth.widget.handler.testHelper');
 
 
-function testHandlePrefilledEmailSignIn_paaswordSignUp() {
+function testHandlePrefilledEmailSignIn_passwordSignUp() {
   // Test password sign-up with prefilled email flow.
   const prefilledEmail = 'user@example.com';
   firebaseui.auth.widget.handler.handlePrefilledEmailSignIn(
diff --git a/javascript/widgets/handler/sendemaillinkforsignin_test.js b/javascript/widgets/handler/sendemaillinkforsignin_test.js
index 6fb99a2f..51dceec5 100644
--- a/javascript/widgets/handler/sendemaillinkforsignin_test.js
+++ b/javascript/widgets/handler/sendemaillinkforsignin_test.js
@@ -95,7 +95,7 @@ function testHandleSendEmailLinkForSignIn_internalError() {
   }).then(function() {
     // Go back to the sign in page for error cases.
     assertSignInPage();
-    // Verfiy email is prefilled.
+    // Verify email is prefilled.
     assertEquals(
         'user@example.com', goog.dom.forms.getValue(getEmailElement()));
     // Show error in info bar.
diff --git a/javascript/widgets/handler/testhelper.js b/javascript/widgets/handler/testhelper.js
index 0c215f4a..48385aa1 100644
--- a/javascript/widgets/handler/testhelper.js
+++ b/javascript/widgets/handler/testhelper.js
@@ -1459,7 +1459,7 @@ function signInSuccessWithAuthResultCallback(redirect, opt_manualRedirect) {
 
 
 /**
- * @param {!fireabaseui.auth.AuthResult} authResult The returned auth result.
+ * @param {!firebaseui.auth.AuthResult} authResult The returned auth result.
  * @param {string=} opt_redirectUrl The redirect URL if available.
  */
 function assertSignInSuccessWithAuthResultCallbackInvoked(
diff --git a/javascript/widgets/handler/unsupportedprovider_test.js b/javascript/widgets/handler/unsupportedprovider_test.js
index 9d837916..d18800ce 100644
--- a/javascript/widgets/handler/unsupportedprovider_test.js
+++ b/javascript/widgets/handler/unsupportedprovider_test.js
@@ -30,7 +30,7 @@ function testHandleUnsupportedProvider() {
   assertUnsupportedProviderPage('user@example.com');
   // Click recover password button.
   submitForm();
-  // Verify that password revover screen is dispalyed.
+  // Verify that password recovery screen is displayed.
   assertPasswordRecoveryPage();
   submitForm();
 
diff --git a/javascript/widgets/uihandlerconfig.js b/javascript/widgets/uihandlerconfig.js
index a05cf6c7..8bedee58 100644
--- a/javascript/widgets/uihandlerconfig.js
+++ b/javascript/widgets/uihandlerconfig.js
@@ -44,7 +44,7 @@ class UiHandlerConfig {
   }
 
   /**
-   * Validates and sets the plain configuration settting object.
+   * Validates and sets the plain configuration setting object.
    * @param {!Object} config The configuration setting object.
    */
   setConfig(config) {
@@ -73,7 +73,7 @@ class UiHandlerConfig {
   }
 
   /**
-   * Returns the display mode for the tenant selction flow. Default to
+   * Returns the display mode for the tenant selection flow. Default to
    * option first mode.
    * @return {!UiHandlerConfig.DisplayMode} The display mode.
    */
diff --git a/protractor.conf.js b/protractor.conf.js
index f7e76758..2c70a105 100644
--- a/protractor.conf.js
+++ b/protractor.conf.js
@@ -36,7 +36,7 @@
  * This will start the HTTP Server locally, and connect through SauceConnect
  * to SauceLabs remote browsers instances.
  *
- * Github will run `npm test -- --saucelabs`.
+ * GitHub will run `npm test -- --saucelabs`.
  */
 
 // Common configuration.
diff --git a/soy/elements.soy b/soy/elements.soy
index a788d5ad..ea05e135 100644
--- a/soy/elements.soy
+++ b/soy/elements.soy
@@ -441,7 +441,7 @@
 {template .phoneAuthSmsNotice}
   <p class="firebaseui-tos firebaseui-phone-sms-notice">
     {msg desc="Notify the user that an SMS may be sent, which may cost the user money.
-        Note that 'Verify' must match the the label of the 'Verify' button that initiates the
+        Note that 'Verify' must match the label of the 'Verify' button that initiates the
         phone number verification."}
       By tapping Verify, an SMS may be sent. Message &amp; data rates may apply.
     {/msg}
@@ -478,7 +478,7 @@
   <p class="firebaseui-tos firebaseui-phone-tos">
     {if $ij.tosCallback and $ij.privacyPolicyCallback}
       {msg desc="The terms of service and privacy policy for a phone authentication flow. Note that
-          'Verify' must match the the label of the 'Verify' button that completes the
+          'Verify' must match the label of the 'Verify' button that completes the
           phone number verification flow."}
         By tapping Verify, you are indicating that you accept our{sp}
         <a href="javascript:void(0)" class="firebaseui-link firebaseui-tos-link" target="_blank">
@@ -491,7 +491,7 @@
       {/msg}
     {else}
       {msg desc="Notify the user that an SMS may be sent, which may cost the user money.
-        Note that 'Verify' must match the the label of the 'Verify' button that initiates the
+        Note that 'Verify' must match the label of the 'Verify' button that initiates the
         phone number verification."}
         By tapping Verify, an SMS may be sent. Message &amp; data rates may apply.
       {/msg}
diff --git a/soy/elements_test.js b/soy/elements_test.js
index e2e077d7..7829793e 100644
--- a/soy/elements_test.js
+++ b/soy/elements_test.js
@@ -486,7 +486,7 @@ function testLoadingDialogLongText() {
     iconClass: 'mdl-spinner mdl-spinner--single-color mdl-js-spinner ' +
         'firebaseui-progress-dialog-loading-icon is-active',
     message: 'I am loading dialog that has very long text. Seriously, the ' +
-        'text is really really long.',
+        'text is really, really, long.',
   };
   var dialog = goog.soy.renderAsElement(
       firebaseui.auth.soy2.element.progressDialog, data, IJ_DATA_);
diff --git a/soy/elements_test_dom.html b/soy/elements_test_dom.html
index db333578..1c553392 100644
--- a/soy/elements_test_dom.html
+++ b/soy/elements_test_dom.html
@@ -145,7 +145,7 @@
       <div id="info-bar" class="firebaseui-container">
         <p>First paragraph.</p>
         <p>Second paragraph.</p>
-        <p>Third paragrapth.</p>
+        <p>Third paragraph.</p>
       </div>
     </td>
   </tr>
diff --git a/soy/strings.soy b/soy/strings.soy
index c5bc58c3..f94b3acf 100644
--- a/soy/strings.soy
+++ b/soy/strings.soy
@@ -418,7 +418,7 @@
       {/msg}
     {case 'failed-precondition'}
       {msg desc="Error message for the failed precondition error."}
-        Request can not be executed in the current system state.
+        Request cannot be executed in the current system state.
       {/msg}
     {case 'out-of-range'}
       {msg desc="Error message for the out of range error."}
diff --git a/stylesheet/firebase-ui.css b/stylesheet/firebase-ui.css
index 9647fb26..772f4c00 100644
--- a/stylesheet/firebase-ui.css
+++ b/stylesheet/firebase-ui.css
@@ -13,7 +13,7 @@
  */
 
 /**
- * CSS for FirebaseUI Javascript widget.
+ * CSS for FirebaseUI JavaScript widget.
  * All selectors should begin with a "firebaseui-" prefix to avoid conflicts.
  */
 .firebaseui-container {
diff --git a/stylesheet/imports.css b/stylesheet/imports.css
index e7e52722..9e289166 100644
--- a/stylesheet/imports.css
+++ b/stylesheet/imports.css
@@ -13,7 +13,7 @@
  */
 
 /**
- * CSS imports for FirebaseUI Javascript widget.
+ * CSS imports for FirebaseUI JavaScript widget.
  */
 
 @import url(https://fonts.googleapis.com/css?family=Roboto:400,500,700&display=swap);
diff --git a/translations/en-GB.xtb b/translations/en-GB.xtb
index 952e492d..e989773e 100644
--- a/translations/en-GB.xtb
+++ b/translations/en-GB.xtb
@@ -380,7 +380,7 @@
 <translation id="6999773882165218263">First name &amp;amp; surname</translation>
 <translation id="7012506961150923116">Grenada</translation>
 <translation id="7024571478138322659">Western Sahara</translation>
-<translation id="7025117765722694556">Request can not be executed in the current system state.</translation>
+<translation id="7025117765722694556">Request cannot be executed in the current system state.</translation>
 <translation id="7062299334696934251">An unknown error occurred.</translation>
 <translation id="7064251114893721966">You've already used <ph name="START_STRONG" /><ph name="EMAIL" /><ph name="END_STRONG" /> to sign in. Enter your password for that account.</translation>
 <translation id="7085136866191400000">Sign-in email sent</translation>