The closest free alternative to Frame is Castoro, 87% alike by measurement, free from Google Fonts. Libre Baskerville and Gambetta come next.
Frame, by Paul Barnes for Commercial Type. Measured on commercialtype.com, October 23rd, 2026.
The quick brown fox jumps over the lazy dog. Typography is what language looks like.
Near twinGoogle Fonts · SIL Open Font License
The quick brown fox jumps over the lazy dog. Typography is what language looks like.
Near twinGoogle Fonts · SIL Open Font License
The quick brown fox jumps over the lazy dog. Typography is what language looks like.
Close matchFontshare · ITF Free Font License
The quick brown fox jumps over the lazy dog. Typography is what language looks like.
Close matchGoogle Fonts · SIL Open Font License
The quick brown fox jumps over the lazy dog. Typography is what language looks like.
Close matchGoogle Fonts · SIL Open Font License
The quick brown fox jumps over the lazy dog. Typography is what language looks like.
Close matchGoogle Fonts · SIL Open Font License
Frame against Castoro, from the letters themselves. These numbers are why Castoro comes first, and what the CSS below corrects for.
Frame Castoro
Swap Frame for Castoro and nothing reflows. This sets Castoro at Frame’s x-height and line length, so headings, buttons and paragraphs break where they did.
font-family: "Castoro", serif;
font-size: 1.082em; /* up to Frame’s x-height */
letter-spacing: -0.004em; /* to Frame’s line length */Frame is a paid serif designed by Paul Barnes, published by Commercial Type.
See Frame on commercialtype.com ↗Castoro. Measured letter by letter, it’s 87% alike: 8% shorter x-height, sets 7% narrower, a touch heavier, same stroke contrast. Libre Baskerville, Gambetta, Crimson Text, Average and Ovo are also close.
No. Frame is a paid serif from Commercial Type. Every alternative on this page is free for commercial use, under the SIL Open Font License and ITF Free Font License.
By measuring the letters, not by comparing names or tags. Frame was measured as commercialtype.com, October 23rd draws it: its proportions, the width of every letter and figure, its weight, its stroke contrast and the shapes of telling letters like a, g, R and Q. The same measurements were taken of 1,506 free fonts, and these came closest. Each match was then checked by eye.
Not if you use the CSS on this page. It sets Castoro 8.2% larger with a touch less letter-spacing, so text written for Frame keeps its x-height and its line lengths, and lines break in the same places.
Point Fontsight at any text on any website. It names the font, and offers a free look-alike you can try on the page, line breaks intact.
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