IcoMoon provides an application to create your own icon fonts, and also releases an icon pack for free.

The icomoon-rails gem integrates the free icon pack of IcoMoon with the Rails asset pipeline. It also provide a way to fork with your own icon fonts.

It is highly recommanded to create your own fork.

Add this line to your application's Gemfile:

gem 'icomoon-rails'

And then execute:

bundle

Add to your app/assets/stylesheets/application.css

*= require icomoon-free/style

If you need to support IE7, there is a icomoon-free/lte-ie7.js in javascripts assets.

Use this stylesheet with conditional comment may be the best way to support IE7. But it can be difficult when it comes to assets pipeline. See this article on StackOverflow for a workaround: Using Rails 3.1 assets pipeline to conditionally use certain css

YOU SHOULD ONLY USE ACTULLY NEEDED ICON FONTS.

You can go to IcoMoon App to create your own fonts pack.

1. select the fonts you needed, and click 'Font->' button
2. click 'More Settings' to set your font name and CSS class prefix
3. click 'Save/Load' to save your font pack for futher use
4. click 'Download' to download your font pack as zip file
5. fork this gem from github
6. follow gem maintenace section and replace NAME and ZIP value to create your own fonts assets
7. use gem 'icomoon-rails', git: 'xxxxxx' in your Gemfile instead
8. follow other part of usage section

Maintain icomoon-rails gem with Rake commands.

Download icon fonts from IcoMoon App.

Update icomoon-free source files.

rake update-icomoon NAME=icomoon-free ZIP=~/Download/icomoon.zip

Publish gem.

rake release

The assets from IcoMoon free icon pack use CC License (CC BY-SA 3.0).

Other parts of gem use MIT license.