Castoro is a free serif typeface designed by Tiro Typeworks, John Hudson, Paul Hanslow, Kaja Słojewska. It is used by 1 of the 407 sites we analyzed, which ranks it joint number 54 among the 100 website fonts you can get. You can use it without paying.
Castoro at a glance
- Rank
- =54 of 100, by number of analyzed sites using it
- Used on
- 1 site of 407 analyzed (0%)
- Style
- Serif
- Designer
- Tiro Typeworks, John Hudson, Paul Hanslow, Kaja Słojewska
- Licence
- Free, open source
- Added to Google Fonts
- November 3, 2020
- Source
- Google Fonts, checked October 21, 2026
Where is Castoro used?
Castoro is the headline font on 1 of the 1 site 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 |
|---|---|---|
| Agencies and creative studios | 1 | 5% |
Which websites use Castoro?
Each link opens the free font finder on that site.
- ueno.co Agencies and creative studios · headings · 98.7% of its text
What does Castoro pair with?
No other typeface appeared with Castoro as a heading, body or code font on more than one analyzed site, so there is no repeated pairing to report.
Where do I get Castoro?
Castoro 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 serif fonts in the ranking
FAQ
Is Castoro free?
Yes. It is open source and free for commercial use, and available from Google Fonts.
Who designed Castoro?
Castoro was designed by Tiro Typeworks, John Hudson, Paul Hanslow, Kaja Słojewska. The source link on this page is where that is credited.
Which websites use Castoro?
Of the 407 sites we analyzed, 1 site draw text in Castoro: ueno.co. The list on this page links each one to the font finder.
What fonts pair well with Castoro?
No other typeface appeared with Castoro as a heading, body or code font on more than one analyzed site, so there is no repeated pairing to report.
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.