Independent publisher preflight
EPUB Release-Readiness Preflight
A basic automated structural check of one EPUB to help spot common packaging, manifest, spine, and navigation problems before release.
One book · $29 · report within 3 business days
You receive the check output in a concise report with file paths, explanations of detected issues, and practical next steps. Scope: one EPUB up to 50 MB.
Checks included
- ZIP container and required mimetype entry.
- Package/OPF parsing and manifest resource references.
- Spine idrefs against manifest entries.
- Basic EPUB3 navigation document checks.
Limitations
This is a limited automated preflight using a small custom script, not EPUBCheck or Ace, not a manual reading or accessibility audit, and not a guarantee of retailer acceptance or full EPUB conformance. It may miss issues and can produce false positives; findings will identify the checks performed. No file upload is collected on this page.
How to start
Email to confirm availability and agree on a suitable file-transfer method and scope before payment. Please do not send DRM-protected files or material you lack permission to share.