bun.sh draws its headings in Archivo, its body text in Martian Mono and its code in Martian Mono. It uses 2 fonts in all. We measured it on October 21, 2026.
The fonts bun.sh draws
| Font | Used for | Share of its custom-font text | Licence | How common |
|---|---|---|---|---|
| Martian Mono | Body text, Code | 73.6% | Open source | 2 of 407 sites (rank =29) |
| Archivo | Headings | 26.4% | Open source | 3 of 407 sites (rank =22) |
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?
- Martian Mono is open source and free to use, including commercially. Get it from Google Fonts.
- Archivo is open source and free to use, including commercially. Get it from Google Fonts.
bun.sh among developer tools and infrastructure sites
bun.sh 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 bun.sh use?
Archivo for headings with Martian Mono for body text does not repeat on another analyzed site, so there is no shared pairing to show. Pairings that do repeat.
Other developer tools and infrastructure sites we measured
- netlify.com Instrument Sans, Figtree, Martian Mono
- 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
See the fonts on all 407 sites.
FAQ
What font does bun.sh use?
bun.sh draws its headings in Archivo, its body text in Martian Mono and its code in Martian Mono. It uses 2 fonts in all: Martian Mono, Archivo. We measured it on October 21, 2026.
Is Archivo free?
Yes. Archivo is open source and free for commercial use, according to Google Fonts.
What font pairing does bun.sh use?
Archivo for headings and Martian Mono for body text. It does not repeat on another analyzed site.
Can I use the same fonts as bun.sh 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 bun.sh. Each font's licence is on this page, from its source.
How do you know which font bun.sh uses?
We opened bun.sh 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.