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EPUB Inspector Reviews 

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TrustScore 3.5 out of 5

3.7

Multimedia and Electronic Book Publisher
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Company details

  1. Multimedia and Electronic Book Publisher

Written by the company

EPUB Inspector is a free browser-based toolkit built to help authors, publishers and ebook professionals inspect, validate, understand and improve EPUB files with confidence. EPUB Inspector exists so authors and publishers can understand their books instead of fighting with technical files, opaque error logs and developer-only tooling. An EPUB is just a zipped bundle of markup, styles and metadata — but that bundle decides whether your book is accepted by a store, renders correctly on a phone, or can be read aloud by a screen reader. Most tools that expose those details assume you are a developer. We think that is the wrong default

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3.7

Average

TrustScore 3.5 out of 5

1 review

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3.7

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(1)

1 review in the last 12 months

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Rated 5 out of 5 stars

EPUB Inspector is an outstanding

EPUB Inspector is an outstanding, lightweight tool that makes validating EPUB 3 files completely effortless. Its clean interface and instant error breakdown help quickly identify and fix markup issues before publishing. The clear status reports eliminate guesswork, saving valuable time during the validation process. Overall, it is an invaluable utility for anyone looking to produce perfectly compliant e-books.

2 October 2026
Unprompted review
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Reply from EPUB Inspector

Thank you for taking the time to share such a thoughtful and detailed review. We’re glad EPUB Inspector has been useful in your work, and we really appreciate the technical feedback.

If you ever run into an issue, spot something we could improve, or find an EPUB problem our Fixer doesn’t resolve, please get in touch by email. But please do not send us your files. If you can share the error message or a few details about what happened, we’ll look into it carefully and take your feedback seriously. We’re always doing our best to make EPUB work easier for authors, and your feedback helps us keep improving.

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