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KDP-IMG-SIZECritical Ingestion Error

Individual Image Exceeds Kindle 5MB Asset Limit

An individual interior image file exceeds Amazon's 5MB per-asset limit.

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Fix all KDP-IMG-SIZE errors in your EPUB automatically

PreFlight automatically compresses and resizes oversized image assets to stay well under Kindle's 5MB asset ceiling.

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What This Error Means in Plain English

Amazon KDP has a hard limit: no single image file can be larger than 5 MB. If an uncompressed map, illustration, or photo exceeds 5 MB, Kindle conversion crashes.

Why Retailers & EAA Regulations Block This File

Kindle conversion failure during upload on KDP Bookshelf.

Technical Specification: Kindle Publishing Guidelines specify maximum individual image byte size must be under 5,242,880 bytes.

Manual Fix Instructions (for Sigil / Calibre)

  1. Open the flagged image in an image editor and compress it to under 5MB.