amplitude.com draws its headings and body text in Gellix. It uses 2 fonts in all. We measured it on November 4, 2026.
The fonts amplitude.com draws
| Font | Used for | Share of its custom-font text | Licence | How common |
|---|---|---|---|---|
| Gellix | Headings, Body text | 89.5% | Not verified as obtainable | – |
| IBM Plex Sans | Smaller text | 10.5% | Open source | 7 of 845 sites (rank =19) |
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?
- Gellix: we could not verify that this typeface can be licensed, so we neither recommend it nor link a source.
- IBM Plex Sans is open source and free to use, including commercially. Get it from Google Fonts.
amplitude.com among saas and productivity sites
amplitude.com is one of the 75 saas and productivity sites we measured. Across them, Inter is the most used font you can get, on 23 of the 75 (31%). All the fonts saas and productivity sites use.
What pairing does amplitude.com use?
amplitude.com uses one family, Gellix, for both headings and body text. So do 567 of the 845 sites we analyzed (67%). Pairings of two different fonts.
Other saas and productivity sites we measured
- freshbooks.com IBM Plex Sans, Founders Grotesk
- 1password.com Agile Sans
- ahrefs.com Inter, Ahrefs
- airtable.com AT Season Sans
- apollo.io Season Mix, Founders Grotesk
- arc.net Marlin Soft SQ, Marlin Soft ExtBlk, ABC Oracle
See the fonts on all 845 sites.
FAQ
What font does amplitude.com use?
amplitude.com draws its headings and body text in Gellix. It uses 2 fonts in all: Gellix, IBM Plex Sans. We measured it on November 4, 2026.
Is Gellix free?
We could not verify that Gellix can be licensed, so we do not state a licence.
What font pairing does amplitude.com use?
One family, Gellix, for both headings and body text.
Can I use the same fonts as amplitude.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 amplitude.com. Each font's licence is on this page, from its source.
How do you know which font amplitude.com uses?
We opened amplitude.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.