Font Glyph Coverage Checker

Check whether a TTF, OTF, WOFF, or WOFF2 font contains every code point needed by your text or Unicode ranges.

Choose a font

Signature-verified, non-collection TTF, OTF, WOFF, and WOFF2 fonts are supported. The public upload limit remains 1 GB.

Use comma-separated code points or inclusive ranges. Text and ranges are never sent to analytics or logs.

Inspection is read-only. Subsetting is inherently lossy. Transforming a font does not grant redistribution, embedding, publishing, or other license rights, and Convertr conservatively blocks transformations when selected fsType bits prohibit them.

Font Glyph Coverage Checker

Compare supplied text or Unicode ranges with a font cmap and report present and missing code points.

Input
One supported font plus bounded pasted text or validated Unicode ranges.
Output
Present and missing Unicode ranges with a coverage summary.
Real limitations
Cmap coverage does not guarantee typographic quality, correct language shaping, or that a license permits the intended use.
Privacy and data handling
one supported font plus bounded pasted text or validated Unicode ranges is uploaded to a compatible Convertr worker only after you start the operation. Processing is automated, and temporary source and result files are deleted automatically after processing rather than retained as permanent storage.

How to use this tool

  1. Choose one supported font plus bounded pasted text or validated Unicode ranges and wait for the page to validate it.
  2. Set the available output or inspection options, then start processing.
  3. Review the reported result and download present and missing Unicode ranges with a coverage summary before the temporary link expires.

Common failure modes

Invalid ranges, unsupported font structures, or a font without usable Unicode cmap coverage prevents a complete check.

Useful example

Check a font against Latin, Greek, and Cyrillic interface text before choosing it for a localized app.