Web Font Subsetter

Make your web fonts load faster by removing unused characters. Create custom font subsets for English, European languages, or specific symbols.

Web Font Subsetter

Reduce font file sizes by creating subsets containing only the characters you need.

Click to upload font file

Character Set:

Sample Text (to verify characters):

How the Font Subsetter Works

Upload your font file (TTF, OTF, WOFF, WOFF2). Select the character set you need: Latin, Latin Extended, Cyrillic, Greek, or enter custom characters.

Enter sample text to verify all needed characters are included. The tool calculates potential file size reduction. Subsets can be 70% smaller than full fonts.

Download the subset information and CSS code. Note: actual font subsetting requires server-side tools. This tool helps plan your subset strategy. All processing happens locally.

When You'd Actually Use This

Website performance optimization

Large fonts slow page loads. Subset to needed characters only. Faster sites rank better and convert more.

Mobile-first design

Mobile users have limited bandwidth. Every KB matters. Subset fonts for mobile performance.

Multi-language sites

Different languages need different characters. Subset per language. Serve only what each user needs.

Icon font optimization

Icon fonts contain hundreds of glyphs. Subset to only used icons. Dramatic size reduction.

Custom font projects

Creating a font for specific use? Plan the character set. Include only what's needed. Efficient distribution.

Learning font optimization

Understand Unicode ranges. See how character sets affect size. Build web font optimization skills.

What to Know Before Using

This tool plans, doesn't subset.Actual subsetting requires font editing software. This helps you plan which characters to include. Strategy tool.

Latin is usually enough.English and Western European sites need only Latin. Don't include Cyrillic if you don't need it.

Future content matters.Include characters you might need later. Adding characters later requires new font files. Plan ahead.

Special characters count.Currency symbols, math operators, punctuation. Check your content for special characters. Include them in subset.

Pro tip: For actual subsetting, use tools like fonttools (Python), glyphhanger, or online services like Transfonter. This tool helps you plan the character set.

Common Questions

How much size reduction can I expect?

Latin-only subsets are often 30-50% smaller. Icon fonts can reduce 80%+. Depends on original font's character coverage.

What's Latin Extended?

Additional characters for European languages. Accented letters, special symbols. Include if you support multiple languages.

Should I subset Google Fonts?

Google Fonts already offers subsetting. Use the text parameter in URLs. Specify characters you need.

What about variable fonts?

Variable fonts are already optimized. Subsetting is complex. Consider if the size savings justify the effort.

Do I need to subset for desktop?

Desktop has more bandwidth, but optimization still helps. Faster loads benefit everyone. Good practice universally.

Can I subset emoji fonts?

Technically yes, but emoji fonts are system-provided. Usually not included in web fonts. Use system emoji instead.

Is this tool free?

Yes, completely free. Plan subsets for as many fonts as you need. No registration or limitations.

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Web Font Subsetter