Fonts on Typekit include support for multiple languages. You can filter for fonts that support a specific language (or combination of languages) from the Language Support section on http://typekit.com/fonts.
Once you've selected the font(s) you want and added them to your kit, choose the appropriate character set for your website:
- Default character set: all the characters required for English, French, German, Italian, Portuguese, and Spanish.
- All Characters set: all the glyphs in the font files, including all of the supported languages for that font family.
- Language Subsetting: create a custom subset with the specific languages that you will be using on your website.
The OpenType Features checkbox adds any supported OpenType features to your kit; it can be used along with any of the Character Set options. Click the “?” icon to see which OpenType features your font includes; read more about Using OpenType features in CSS.
Remember to republish your kit after making any changes.
Note that the Type Tester tool does not currently support the extended character set, so you will not be able to preview diacritics or other international characters on the Typekit website. These help pages list the minimum character set for each of the supported languages: