developer.mozilla.org draws its headings and body text in Inter. That is the only custom font on the page. We measured it on November 4, 2026.
The fonts developer.mozilla.org draws
| Font | Used for | Share of its custom-font text | Licence | How common |
|---|---|---|---|---|
| Inter | Headings, Body text | 100% | Open source | 126 of 845 sites (rank 1) |
Share is how much of the page’s custom-font text each font draws. System fonts and icon fonts are never counted. Each site was opened twice in a real browser and Chrome was asked which font file drew each piece of text. We count a font for a site only if both runs saw it and it drew at least 2% of the site’s custom-font text. The full method.
Can I use the same fonts?
- Inter is open source and free to use, including commercially. Get it from Google Fonts.
developer.mozilla.org among education sites
developer.mozilla.org is one of the 38 education sites we measured. Across them, Inter is the most used font you can get, on 5 of the 38 (13%). All the fonts education sites use.
What pairing does developer.mozilla.org use?
developer.mozilla.org uses one family, Inter, for both headings and body text. So do 567 of the 845 sites we analyzed (67%). Pairings of two different fonts.
Other education sites we measured
- berkeley.edu Inter
- edx.org Inter
- ted.com Inter
- udacity.com Inter, Plus Jakarta Sans, Barlow Condensed
- babbel.com Graphik, Feature Text LC
- brilliant.org CoFo Brilliant, CoFo Robert
See the fonts on all 845 sites.
FAQ
What font does developer.mozilla.org use?
developer.mozilla.org draws its headings and body text in Inter. We measured it on November 4, 2026.
Is Inter free?
Yes. Inter is open source and free for commercial use, according to Google Fonts.
What font pairing does developer.mozilla.org use?
One family, Inter, for both headings and body text.
Can I use the same fonts as developer.mozilla.org on my own site?
Only if the licence allows it. Free and open-source fonts can be used freely. Commercial fonts need your own licence, even though you can see the file on developer.mozilla.org. Each font's licence is on this page, from its source.
How do you know which font developer.mozilla.org uses?
We opened developer.mozilla.org in a real browser and asked Chrome which font file drew each piece of text, twice in separate sessions. A font counts only if both runs saw it and it drew at least 2% of the site's custom-font text.
Can I check a different website?
Yes. Paste its address into the free font finder.