Your Font File Is 2 MB and You Only Need Forty Characters

Need to Know Why a Font File Is So Large?

You have a font file that is 2 MB and you only need a handful of characters. You want to know what is taking up space — glyph count, character mappings, OpenType tables — before you decide whether to subset it or find an alternative.

OnliTools Font Size Analyzer

OnliTools Font Size Analyzer breaks down font file size by glyph count, character mappings, and OpenType tables directly in your browser. Upload your font and see exactly where the bytes are going.

How to Use It

1. Go to onlitools.com/font-size-analyzer.
2. Upload your font file.
3. Review the breakdown: glyph count, table sizes, character mappings.
4. Decide whether to subset, compress, or replace the font.

Great For

• Performance engineers — identify bloated fonts before they hit production
• Web developers — understand why a font file is larger than expected
• Designers — compare font candidates by actual file structure, not just appearance

Wrap Up

No install, no terminal, no upload to a server. OnliTools Font Size Analyzer shows you exactly what is inside a font file and where the weight comes from.