Comparison table
| Katagami Serif | IBM Plex Serif | |
|---|---|---|
| Designer | Kevin Liu | Mike Abbink, Paul van der Laan, Pieter van Rosmalen |
| Foundry or publisher | Self-published by Kevin Liu | IBM, with Bold Monday |
| First released | 2026 | 2017 |
| License | SIL Open Font License 1.1 | SIL Open Font License 1.1 |
| Free for commercial use | Yes | Yes |
| Weights | 100 to 900 | 100 to 700 |
| Italics | Not yet | Yes |
| Variable axes | wght | wght 100 to 700 (variable release, 2026) |
| Scripts | Latin, Greek, Cyrillic and 19 more scripts, 6,580 characters, plus Chinese, Japanese and Korean companions | Latin, Cyrillic |
| Notable features | Rectangular serifs, small capitals, tabular figures, fractions | Transitional design with rectangular serifs, alternates for a, g and 0 |
Download and web setup
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Download it from the download page, or link katagami.css and set the family. Font-ify shows any website in Katagami Serif.
<link rel="stylesheet" href="https://katagami.kevinliu.studio/fonts/katagami.css">
Questions
Is Katagami Serif free for commercial use?
Katagami Serif is free for commercial use. It is released under the SIL Open Font License 1.1, which allows use in commercial and non-commercial products.
Is IBM Plex Serif free for commercial use?
IBM Plex Serif is free for commercial use under the SIL Open Font License 1.1. Check the license at https://www.ibm.com/plex/ before you ship it.
Sources
- https://katagami.kevinliu.studio/katagami-serif
- https://github.com/google/fonts/blob/main/ofl/ibmplexserif/METADATA.pb
- https://github.com/IBM/plex/releases
The sources were checked on 2026-10-16.