cloudflare.com draws its headings and body text in STK Bureau Sans. That is the only custom font on the page. We measured it on October 21, 2026.
The fonts cloudflare.com draws
| Font | Used for | Share of its custom-font text | Licence | How common |
|---|---|---|---|---|
| STK Bureau Sans | Headings, Body text | 99.9% | Not verified as obtainable | – |
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?
- STK Bureau Sans: we could not verify that this typeface can be licensed, so we neither recommend it nor link a source.
cloudflare.com among developer tools and infrastructure sites
cloudflare.com is one of the 62 developer tools and infrastructure sites we measured. Across them, Inter is the most used font you can get, on 25 of the 62 (40%). All the fonts developer tools and infrastructure sites use.
What pairing does cloudflare.com use?
cloudflare.com uses one family, STK Bureau Sans, for both headings and body text. So do 280 of the 407 sites we analyzed (69%). Pairings of two different fonts.
Other developer tools and infrastructure sites we measured
- algolia.com Sora, Inter
- angular.dev Inter, DM Mono
- astro.build Obviously, Inter, MD IO
- auth0.com Aeonik, Aeonik Mono
- aws.amazon.com Amazon Ember, Amazon Ember Mono
- bun.sh Martian Mono, Archivo
See the fonts on all 407 sites.
FAQ
What font does cloudflare.com use?
cloudflare.com draws its headings and body text in STK Bureau Sans. We measured it on October 21, 2026.
Is STK Bureau Sans free?
We could not verify that STK Bureau Sans can be licensed, so we do not state a licence.
What font pairing does cloudflare.com use?
One family, STK Bureau Sans, for both headings and body text.
Can I use the same fonts as cloudflare.com 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 cloudflare.com. Each font's licence is on this page, from its source.
How do you know which font cloudflare.com uses?
We opened cloudflare.com 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.