latin
Latin basic
ASCII + Western European basics. Enough for English.
Font converter
TTF / OTF / WOFF · font preview, glyph subsetting and size estimate
Free No account required
Drop a font file
TTF · OTF · WOFF · max 20 MB
Glyph subset
This tool currently provides the preview, subset selection and a size estimate. It does not generate a downloadable WOFF2 file yet.
This tool patches one problem at a time
The Performance module in Insight does the same in every audit: Core Web Vitals in every audit — with priorities, history and before/after comparison.
/ About the tool
Why are fonts so heavy?
A single weight in TTF can be ~150 KB. A full family with italics often lands in the hundreds of KB.
WOFF2 with Brotli is usually 30–50% smaller than TTF/OTF.
Subsetting keeps only the glyphs you need — often a fraction of the original.
/ Glossary
Common subsets
latin-ext
Latin Extended
Latin + Central European characters. Typical regional choice.
cyrillic
Cyrillic
When the site serves Cyrillic languages.
custom
Custom range
Your own character set — smallest possible file.
/ FAQ
Frequently asked questions
Yes for nearly all modern traffic. IE11 needs a WOFF fallback.
Prefer swap or optional. Avoid block (FOIT).
It works, but self-host + subset is usually faster and more private.
/ Related tools