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This is a set of tools for making sense of the Google Font directory, because isn't always as full-featured as it could be.

There is a demo on GitHub pages.


Before you start you'll have to clone the google font directory.

I had lots of trouble getting it to work due to the size, so I ended up cloning it to a VM somewhere in the first world and then rsyncing it. After that hg up works fine.

You have to also install otfinfo from LCDF Typetools to extract the opentype features supported by each font file. In OSX you can install it using homebrew with brew install lcdf-typetools.


This builds a fonts.json file that contains info about all the fonts, their included font variants, file sizes and supported font features.

Only fonts that at support kerning and at least one other feature are included. Right now a few fonts also get skipped because they don't come with woff files. Those could probably be generated if you really wanted them included in the list.

all fonts

./ ~/src/googlefontdirectory

whitelist only

./ ~/src/googlefontdirectory whitelist.txt

Just change the paths to where things are located on your system.


The included index.html is a demo app for testing out these fonts. The woff files are served up directly, because Google Fonts strips out all these extra features.

Click a font variant on the left to preview it. The features supported by that font variant (weight and style) will appear on the right so you can toggle them one by one. text-rendering: optimizeLegibility is set by default, so things like kerning and standard ligatures will just work anyway.

If all variants of a font don't support all the same features, then the feature name will be italicised in the font list on the left.

The font names are linked to Google Font Specimen pages and the features are linked to Microsoft's OpenType font feature documentation.


Extract info out of the Google Fonts archive.




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