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Try http://icomoon.io/

You can upload your own (or others) fonts too. Use only the ones you need instead of adding the whole font to your project.

This update is about getting the CSS right. Cleaning it up, speeding it up, making it leaner. More icons in future versions.

Looking forward to it. Love FA.

icomoon.io

It doesn't have the 10 new version 4 FA icons yet - but you can add any svg based icon you want, or any icon from one of the many other free sets they have.