Glyph Coverage

Before you use a font for a language or a specific text, it helps to know which characters it actually contains. A font maps characters to glyphs through its 'cmap' table, and that mapping decides whether your accented letters, currency symbols, Greek, Cyrillic or punctuation will show up or fall back to a different font. This page reads the cmap and reports exactly which Unicode code points the font covers.

The report lists the total number of mapped code points, the lowest and highest covered code point, and a breakdown by Unicode block (for example Basic Latin, Latin-1 Supplement, Latin Extended, Greek, Cyrillic, General Punctuation) with how many code points of each block the font provides. It works on TTF, OTF, WOFF and WOFF2 - the WOFF wrappers are unpacked first - so you can check any common font file.

Everything runs entirely locally in your browser (no upload, even offline) - the font never leaves your device. Honestly framed: it reports which code points the cmap maps to a glyph; it does not judge how good each glyph looks, and a font may map a code point to a placeholder. A non-font or corrupt file is rejected with a clear message.

Specifications

In 3 steps

1. Drop or tap your font file (TTF, OTF, WOFF or WOFF2).
2. The tool reads the cmap and groups the covered code points.
3. Download the coverage report.

Limitations: Reads a font's cmap table and reports its character coverage: the count of mapped Unicode code points, the covered code-point range, and a per-Unicode-block breakdown. Works on TTF, OTF, WOFF and WOFF2 (the WOFF wrappers are unpacked first). It reports which code points map to a glyph; it does not assess glyph quality. A non-font or corrupt file is rejected with a clear error.

FAQ

Related tools

• Font Information
• TTF to WOFF2
• WOFF2 to TTF