NormalizeUrl

This gem can normalize HTTP(S) URLs by applying a certain set of transformations. After normalization, two different URLs that point to the same resource should look exactly the same.

For example:

• http://example.com/products?product_id=123
• HTTP://EXAMPLE.COM/products/?product_id=123
• http://example.com/products/?product_id=123
• http://example.com/foo/../products?product_id=123
• http://example.com/products?product_id=123#comments-section
• http://example.com//products/?product_id=123
• http://example.com/products/?product_id=123&
• http://example.com/products?utm_source=whatever&product_id=123&utm_medium=twitter&utm_campaign=blah

will all become http://example.com/products?product_id=123 after normalization.

Some of the transformations are potentially dangerous, since not all webservers comform to standards and some of them are just plain weird. So there is no guarantee that the URL will still work.

Installation

Add this line to your application's Gemfile:

gem "normalize_url"

And then execute:

$ bundle

Or install it yourself as:

$ gem install normalize_url

Usage

NormalizeUrl.process("http://example.com/products/?foo=bar&baz") # => "http://example.com/products?baz&foo=bar"

Some tranformations could be skipped by demand. All you need is to pass its name as a optional value to normalize method:

NormalizeUrl.process("http://example.com/foo/") # => "http://example.com/foo"
NormalizeUrl.process("http://example.com/foo/", remove_trailing_slash: false) # => "http://example.com/foo/"

Transformations

• Remove trailing slash. Option :remove_trailing_slash.

  Example:

  http://example.com/products/ -> http://example.com/products

• Remove repeating slashes. Option :remove_repeating_slashes.

  Example:

  http://example.com/foo//bar -> http://example.com/foo/bar

• Remove hash fragment. Option :remove_hash.

  Example:

  http://example.com/foo#bar -> http://example.com/foo

• Remove known commonly used tracking query parameters. Option :remove_tracking.

  Example:

  http://example.com/?utm_source=whatever -> http://example.com/

• Sort query string. Option :sort_query.

  Example:

  http://example.com/products/?foo=bar&baz -> http://example.com/products?baz&foo=bar

Contributing

1. Fork it (https://github.com/rwz/normalize_url/fork)
2. Create your feature branch (git checkout -b my-new-feature)
3. Commit your changes (git commit -am 'Add some feature')
4. Push to the branch (git push origin my-new-feature)
5. Create a new Pull Request