https://github.com/jqpe/font-subset
Create a subset of most web fonts (woff2, ttf and otf) right inside the browser.
https://github.com/jqpe/font-subset
font font-subset font-subsetter wasm wasm-pack
Last synced: 4 months ago
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Create a subset of most web fonts (woff2, ttf and otf) right inside the browser.
- Host: GitHub
- URL: https://github.com/jqpe/font-subset
- Owner: jqpe
- Created: 2025-03-11T14:28:10.000Z (7 months ago)
- Default Branch: main
- Last Pushed: 2025-03-11T15:20:03.000Z (7 months ago)
- Last Synced: 2025-03-11T15:43:10.686Z (7 months ago)
- Topics: font, font-subset, font-subsetter, wasm, wasm-pack
- Language: TypeScript
- Homepage: https://font-subset.nykanen.co
- Size: 377 KB
- Stars: 0
- Watchers: 1
- Forks: 0
- Open Issues: 0
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Metadata Files:
- Readme: README.md
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README
# font-subset
font-subset will create a subset of your font, including only the glyphs needed to render the characters you define.
## Limitations
These limitations may change in the future. Star https://github.com/jqpe/font-subset for updates!
- Only characters in the [Basic Multilingual Plane (BMP)]() are supported. This means subsetting emoji is often not possible. Popular icon fonts use the E000–F8FF private use area, so subsetting them is possible.
- Only a single font can be processed at a time. If multiple files were dropped, the last will be used.
- All variable axes will be kept as in the original.
- The font is automatically converted to Woff2 format.
- Very large fonts might not work. Tested up to a 2.5MB font. A Woff2 font will need to be decompressed for subsetting, so its actual size might be up to 5x the Woff2 size.
- Modifier symbols currently do not get special treatment, entering ¨ + o to create ö will include both ¨ and ö in the subset input. You can click a character in the input preview grid to exclude it.
## Usage
1. Define the charactes you want to keep. You might find it beneficial to start with unicode blocks (see https://unicode.link/blocks for example) and then use the grid to trim the input down.
1. Do not put U+ or anything else before the Unicode ranges (or a single Unicode codepoint)
2. `0x00FF = 0xFF`, but `0xE000 != 0xe0`
3. Syntax: `0-7f, fffd, 80-ff` will include Basic Latin, the Replacement character (�), and Latin-1 Supplement. You can also exclude characters or ranges by prefixing with `!`: `0-7f, !20-2f, !60` for Basic Latin without punctuation and grave accent.
4. Control characters are excluded by default.
2. Drop a font.
3. You can now use the editor (supports basic markdown shortcuts like # for a heading) to inspect your font, play with the variations and most importantly, download the subset.
## License
Source available for now, Copyright Jasper Nykänen 2025.