The Google Fonts API URL for Noto Sans, for example, looks like this, when only loading the regular style: /css?family=Noto+Sans:400.Īccessing this URL will return several rules for various character sets, including the specific unicode-range details (with that, supporting browsers will only download the font file if needed). For my conversion from Google Fonts to self-hosted fonts, I used another solution. Glyphhanger brings with -US_ASCII and -LATIN two presets for the subsetting. Now the subsetting of fonts, the removal of unused characters from the font, to make the files smaller. Without it, I got an error that Chromium cannot be Code language: CSS ( css ) Font subsetting To install Glyphhanger, run the following command (using -unsafe-perm=true -allow-root was necessary for me with Ubuntu on Windows 10. For the installation of fontTools (if I remember correctly) it was necessary to run Bash on Ubuntu on Windows as administrator.

Preliminary note: I installed it on Windows 10 with the Windows Subsystem for Linux.

Via a whitelist, you can specify characters that should be part of the subset in any case. Besides that, it is possible to provide a font-family value, to only get the characters that are inside of elements with that rule. For that, there is also a crawler feature, so that linked pages of the website are also analyzed. by specifying one or more URL(s) from which the characters of the content are used as subsetting value.by specifying certain Unicode characters(ranges).Take Glyphhanger«, Zach Leatherman introduces the tool that he created for the Filament Group. In the blog post » It’s Dangerous to Go Stallone. The project’s GitHub repo describes it as »web font utility belt«: it comes with various features that make working with web fonts easier. Loading fonts locally from the web server is the safer variant. But if you use fonts via third-party services, user information (at least the IP address) are sent to this service, and that could be problematic with the upcoming GDPR. Why all the effort? There are services like Google Fonts or Typekit. I found a fix for that in a GitHub issue and updated the post accordingly. Update from July 22, 2018: Today I tried to install Glyphhanger and got an error that Chromium could not be downloaded.

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