Fixing font and non-standard font errors in your EPUB
Font errors come from non-standard or non-embedded fonts. Embed standard fonts (or rebuild from DOCX) so text displays everywhere. Here's how.
Last updated 2026-06-15
Font errors mean your EPUB references a font that is non-standard or not properly embedded — which can make text display wrong on some devices.
Why it happens
- A custom font was referenced but not embedded in the file.
- A non-standard font type (for example an unusual TTF variant) that stores flag.
- Special scripts (non-Latin) without an embedded font.
The fixes
- Rebuild from your DOCX. Chiify's free conversion produces clean, well-behaved typography — the simplest cure. See I don't have an EPUB.
- Stick to standard fonts for body text; readers can resize and re-theme anyway.
- Embed fonts for non-Latin scripts so characters render on every device.
For special scripts
If you publish in a script that needs a specific font (Arabic, Devanagari, CJK, etc.), make sure that font is embedded. If you are unsure, upload the DOCX and let conversion handle embedding.
See also common EPUB upload errors.
Still need help? Open a ticket from your dashboard or email [email protected] — a real person replies.
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