IBM Plex Mono is a free monospace typeface designed by Mike Abbink, Bold Monday. It is used by 4 of the 407 sites we analyzed, which ranks it joint number 13 among the 100 website fonts you can get. You can use it without paying.
IBM Plex Mono at a glance
- Rank
- =13 of 100, by number of analyzed sites using it
- Used on
- 4 sites of 407 analyzed (1%)
- Style
- Monospace
- Designer
- Mike Abbink, Bold Monday
- Licence
- Free, open source
- Added to Google Fonts
- March 12, 2018
- Source
- Google Fonts, checked October 21, 2026
Where is IBM Plex Mono used?
IBM Plex Mono is the code font on 2 of the 4 sites that use it. Where it is not the biggest font for a job, it draws a smaller share of the text, such as labels or buttons.
| Industry | Sites using it | Of analyzed sites in that industry |
|---|---|---|
| Developer tools and infrastructure | 3 | 5% |
| AI | 1 | 3% |
Which websites use IBM Plex Mono?
Each link opens the free font finder on that site.
- tailwindcss.com Developer tools and infrastructure · 35.3% of its text
- convex.dev Developer tools and infrastructure · code · 9.9% of its text
- postman.com Developer tools and infrastructure · code · 13.8% of its text
- huggingface.co AI · 5.4% of its text
What does IBM Plex Mono pair with?
| Used together with | Sites | As |
|---|---|---|
| GT America | 1 | body and code |
| Inter | 1 | body and code |
A pairing here means two different typefaces that are the biggest font for different jobs on the same site. It shows what real sites do, which is a good starting point and not a rule. All pairings.
Where do I get IBM Plex Mono?
IBM Plex Mono is open source and free to use, including commercially. Download it from Google Fonts.
Google Fonts · checked October 21, 2026.
How do we know?
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.
Other monospace fonts in the ranking
FAQ
Is IBM Plex Mono free?
Yes. It is open source and free for commercial use, and available from Google Fonts.
Who designed IBM Plex Mono?
IBM Plex Mono was designed by Mike Abbink, Bold Monday. The source link on this page is where that is credited.
Which websites use IBM Plex Mono?
Of the 407 sites we analyzed, 4 sites draw text in IBM Plex Mono: tailwindcss.com, convex.dev, postman.com, huggingface.co. The list on this page links each one to the font finder.
What fonts pair well with IBM Plex Mono?
On the sites we analyzed, IBM Plex Mono appears alongside GT America (1 site), Inter (1 site). That shows what real sites do, not a rule.
How do you know which font a site uses?
We open each site in a real browser and ask Chrome which font file it used to draw each piece of text, so renamed and self-hosted fonts are named by the file itself. Each site was measured twice, and a font counts only if both runs saw it.