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EPUB Embedded Font Inspector

See embedded fonts, CSS references, missing resources and the licensing evidence you provide.

Original sources preservedReview before exportSave & reopen projects

Original sources stay unchanged · save your review to keep decisions

Inventories manifest fonts and direct CSS font URLs. Reads supported unobfuscated font metadata up to 10 MiB per font; obfuscated fonts are reported and retained. User-supplied license notes are evidence to review, not a legal permission check. No fonts are downloaded, executed or de-obfuscated.

Using EPUB Embedded Font Inspector

See embedded fonts, CSS references, missing resources and the licensing evidence you provide.

  1. Open the supported source files or try the worked example. The original files remain unchanged.
  2. Search and filter records. Select a finding to review its evidence and make explicit decisions in Details & settings.
  3. Use Preview to inspect the staged result. Undo and redo are available for settings and review decisions. Save the review project to continue later.
  4. Open Export to download the task-specific result or a portable review report. Reopen document exports in your normal reader before sharing. Keep the original source files with any saved project.

Example

The worked EPUB embeds Liberation Sans and references a missing WOFF2 font in CSS. Inspect the actual font family, glyph count and resource paths, then record your own licensing evidence.

Questions & answers

What can this tool do?

Inventories manifest fonts and direct CSS font URLs. Reads supported unobfuscated font metadata up to 10 MiB per font; obfuscated fonts are reported and retained. User-supplied license notes are evidence to review, not a legal permission check. No fonts are downloaded, executed or de-obfuscated.

Does this upload or overwrite my source files?

Processing is performed in this browser and exports are new downloads. Sources are kept in memory. Review projects contain decisions and source fingerprints, not original source bytes. Public pages retain existing approved ads and optional analytics.

Can I save and reopen the project?

Yes. Save review creates a JSON project. Reopen it with the exact original files; filename and SHA-256 checks prevent applying decisions to different documents. Front matter can reopen without any source files.

What are the limits?

Use up to eight files, 25 MiB each and 80 MiB total. Text imports are limited to 2 MiB. DOCX/EPUB packages are limited to 120 MiB expanded and 5,000 ZIP entries. Exact Word or ebook-reader pagination is not reproduced in the structural preview. Use unsigned, unencrypted source copies.

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