Productivity · Developer Tools
Ebook File
Check
Check an EPUB against the spec before upload
Ebook File Check runs the same live engine here and in your assistant
Live playground
Use Ebook File Check now
Point a tool at any public EPUB URL and the official EPUBCheck engine downloads and validates the real file — exact rule ids, file locations, and a clean pass/fail.
Your usage
—
Free forever — create a free account for a bigger monthly allowance that follows you across every app and every assistant.Pooled across every app and surface. Manage usage
Loading the live tools…
Marketplaces
Open Ebook File Check where you already work — every listing runs the same live engine as this page.
- Marketplace listings are on the way. Meanwhile, point any MCP-compatible assistant straight at the live endpoint:
https://powmcp.com/epub-check/mcp
Proof
Real apps.Real engines.Real results.
- Application
- Ebook File Check
- Category
- Productivity
- Platform
- Web
Engine Anatomy
Proof
Ebook File Check
What it does
Check an EPUB against the spec before upload
Validate one EPUB — a public URL or a file attached in the conversation — against the EPUB 2/3 specification with exact rule-id and file-location evidence, or compare two builds under identical limits, with a clear automated-versus-human-review boundary.
Tools in this application
Ebook Check
ebook_check
ebook_check
Ebook Compare
ebook_compare
ebook_compare
0USD
Free to use with fair-use rate limits.
Ebook File Check questions
Scope and boundaries for Ebook File Check.
01What does Ebook File Check actually check?
Validate one EPUB — a public URL or a file attached in the conversation — against the EPUB 2/3 specification with exact rule-id and file-location evidence, or compare two builds under identical limits, with a clear automated-versus-human-review boundary.
02What does it never do?
It reports what its pinned engine measured and nothing more — it does not judge quality, correctness of your underlying business decisions, or anything outside its stated scope, and it never fabricates a result.
03What does it cost?
Nothing. Every published app is free to use with fair-use rate limits.
04Can my assistant connect directly?
Yes — any MCP-compatible assistant can connect straight to the canonical endpoint: https://powmcp.com/epub-check/mcp. Marketplace listings are conveniences over the same live engine.