diff --git a/FoundationKit.xcodeproj/project.pbxproj b/FoundationKit.xcodeproj/project.pbxproj
index 532ce46..ce55c6b 100644
--- a/FoundationKit.xcodeproj/project.pbxproj
+++ b/FoundationKit.xcodeproj/project.pbxproj
@@ -159,6 +159,8 @@
 		C5EF038613C98EC100953F2B /* NKSynthesizeSingletonTests.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; path = NKSynthesizeSingletonTests.m; sourceTree = "<group>"; };
 		DC410CFF13C39BFD00C90C19 /* libFoundationKitMac.a */ = {isa = PBXFileReference; explicitFileType = archive.ar; includeInIndex = 0; path = libFoundationKitMac.a; sourceTree = BUILT_PRODUCTS_DIR; };
 		DC410D0213C39BFD00C90C19 /* Foundation.framework */ = {isa = PBXFileReference; lastKnownFileType = wrapper.framework; name = Foundation.framework; path = System/Library/Frameworks/Foundation.framework; sourceTree = SDKROOT; };
+		DC5BFFD914364EFC008FA197 /* libz.dylib */ = {isa = PBXFileReference; lastKnownFileType = "compiled.mach-o.dylib"; name = libz.dylib; path = /usr/lib/libz.dylib; sourceTree = "<absolute>"; };
+		DC5BFFDC14364F4C008FA197 /* FKUnzip.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = FKUnzip.h; sourceTree = "<group>"; };
 		DCB0126F13C4AE9400AB692F /* NSError+FKAdditions.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = "NSError+FKAdditions.h"; sourceTree = "<group>"; };
 		DCB0127013C4AE9400AB692F /* NSError+FKAdditions.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; path = "NSError+FKAdditions.m"; sourceTree = "<group>"; };
 		DCF68FBC13C74ADB0057517A /* NSObject+FKSwizzle.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = "NSObject+FKSwizzle.h"; sourceTree = "<group>"; };
@@ -302,6 +304,7 @@
 				DCF68FBD13C74ADB0057517A /* NSObject+FKSwizzle.m */,
 				C5AAAA7713C9A33F00E44CE7 /* NSString+FKAdditions.h */,
 				C5AAAA7813C9A33F00E44CE7 /* NSString+FKAdditions.m */,
+				DC5BFFDC14364F4C008FA197 /* FKUnzip.h */,
 				39CFA6131422500400DC3E57 /* NSUserDefaults+FKAdditions.h */,
 				39CFA6141422500500DC3E57 /* NSUserDefaults+FKAdditions.m */,
 			);
@@ -354,6 +357,7 @@
 		DC410D0113C39BFD00C90C19 /* Frameworks */ = {
 			isa = PBXGroup;
 			children = (
+				DC5BFFD914364EFC008FA197 /* libz.dylib */,
 				392D3C43142FC5E9003AFB81 /* AudioToolbox.framework */,
 				392D3C45142FC5F2003AFB81 /* AudioUnit.framework */,
 				392D3C46142FC5F2003AFB81 /* CoreAudio.framework */,
diff --git a/Sources/FKUnzip.h b/Sources/FKUnzip.h
new file mode 100644
index 0000000..cd2cc18
--- /dev/null
+++ b/Sources/FKUnzip.h
@@ -0,0 +1,28 @@
+// Part of FoundationKit http://foundationk.it
+
+#import <zlib.h>
+
+typedef enum {
+  FKUnzipFileTypeGzip = 1
+} FKUnzipFileType;
+
+NS_INLINE BOOL FKUnzip(FKUnzipFileType ftype, NSString *src, NSString *dst) {
+  if (ftype == FKUnzipFileTypeGzip) {
+    static unsigned rchunk = 16384;
+    BOOL result = YES;
+    gzFile file = gzopen([src UTF8String], "rb");
+    FILE *dest = fopen([dst UTF8String], "w");
+    unsigned char buffer[rchunk];
+    int uncompressedLength;
+    while ((uncompressedLength = gzread(file, buffer, rchunk)) ) {
+      if (fwrite(buffer, 1, uncompressedLength, dest) != uncompressedLength || ferror(dest)) {
+        result = NO;
+        break;
+      }
+    }
+    fclose(dest);
+    gzclose(file);
+    return result;
+  }
+  return NO;
+}
\ No newline at end of file
diff --git a/Sources/FoundationKit.h b/Sources/FoundationKit.h
index e1dae33..ca06717 100644
--- a/Sources/FoundationKit.h
+++ b/Sources/FoundationKit.h
@@ -18,6 +18,7 @@
 #import "FKMath.h"
 #import "FKShorthands.h"
 #import "FKSynthesizeSingleton.h"
+#import "FKUnzip.h"
 
 #import "FKPaths.h"
 #import "FKMutableIntArray.h"