substack.com draws its headings in Cahuenga. That is the only custom font on the page. We measured it on October 21, 2026.
The fonts substack.com draws
| Font | Used for | Share of its custom-font text | Licence | How common |
|---|---|---|---|---|
| Cahuenga | Headings | 100% | 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?
- Cahuenga: we could not verify that this typeface can be licensed, so we neither recommend it nor link a source.
substack.com among media, news and publishing sites
substack.com is one of the 23 media, news and publishing sites we measured. Across them, Adobe Garamond Pro is the most used font you can get, on 1 of the 23 (4%). All the fonts media, news and publishing sites use.
What pairing does substack.com use?
substack.com has no heading and body font pair to compare, because no single font clearly leads both. Pairings real sites use.
Other media, news and publishing sites we measured
- bloomberg.com BW Haas Grotesk, Avenir Next P for BBG, BW Haas Head 65
- buzzfeed.com Proxima Nova, Calistoga
- cnn.com CNN Sans Display
- css-tricks.com Blanco
- medium.com OTS, GT Super
- nationalgeographic.com Inspire
See the fonts on all 407 sites.
FAQ
What font does substack.com use?
substack.com draws its headings in Cahuenga. We measured it on October 21, 2026.
Is Cahuenga free?
We could not verify that Cahuenga can be licensed, so we do not state a licence.
What font pairing does substack.com use?
substack.com does not have a clear heading and body pair: no single font leads both.
Can I use the same fonts as substack.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 substack.com. Each font's licence is on this page, from its source.
How do you know which font substack.com uses?
We opened substack.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.