Loading…
About Font Subset
Font Subset — free, private, browser-based font tool
Shrink a font to only the characters you actually use — often 90% smaller. It takes TTF, OTF, WOFF and gives you TTF. It runs in your browser, so the file is processed on your own device.
Why use Font Subset
- ·Files stay on your device — nothing is uploaded
- ·No signup needed
- ·Works in any modern browser, on any OS
- ·Free daily use; Pro removes limits and watermarks
How to use it
- 1Drop a TTF, OTF, WOFF file on the page, or click to choose one.
- 2Pick the options you want.
- 3Download the TTF file.
What Font Subset does
Shrink a font to only the characters you actually use — often 90% smaller. The result is a TTF file you download directly.
How it works
opentype.js plus harfbuzz-wasm for parsing and subsetting; WOFF2 round-trip support. The processing code runs inside the page, so your file is not uploaded to a server — you can confirm this in your browser's DevTools → Network tab.
Frequently asked questions
Does Font Subset upload my files?+
No. Font Subset runs in your browser and processes the file on your device. Nothing is sent to our servers.
Is Font Subset free?+
Yes, with a daily free allowance and no signup. Xonvert Pro ($4.99/month) removes the daily limits and the watermark on exported files.
Do I need to install anything?+
No. It works in any modern browser on Windows, macOS, Linux, ChromeOS, Android and iPad.
Related font tools
Font Preview
See your font in any size, weight, and sample text — instantly.
Font Inspector
Read every metadata field — designer, version, license, glyph count.
Font Convert
Convert OTF / CFF fonts to TTF — keeps every glyph and metric.
Web Font Generator
Get a ready-to-paste @font-face snippet with your font embedded.