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FREE TOOLS / NO. 39

A little order, one batch at a time.

Find what makes a library hard to search before fixing what merely looks untidy.

Interactive resourceReviewed September 13, 2026
YOUR WORKBENCHNo account needed

Find a useful place to start.

EPUB files · read locally, never uploaded

Up to 100 files, 64 MB per file; 128 MB total.

Files stay on your device. The tool reads only what it needs and never changes the original.

THE SHORT ANSWER

Select a batch of EPUBs to produce a local review report. The audit checks useful metadata and basic package structure. It does not edit files, assign invented metadata, or judge the quality of the writing.

01

Prioritize finding books

Start with missing titles and creators, then package errors that prevent inspection. Those affect basic retrieval. An optional field can be useful without being a defect when absent.

02

Read warnings as review tasks

A missing cover declaration does not necessarily mean the file contains no image. A missing series field may be entirely appropriate. Inspect the actual book before treating every observation as a correction.

03

Work in manageable batches

Use the PDF report as a small task list. Correct a few records in your chosen library editor, then re-run the audit on the exported copies. Keep a backup so cleanup remains reversible.

The details, at a glance.

A little order, one batch at a time. — at a glance
ConsiderWhat to look for
Essential metadataTitle, creator, language, identifier
Cover declarationCheck for a declared cover resource
SeriesShow available sequence metadata
OutputPDF findings per selected file
MAKE IT YOURS

A useful next step.

  1. Select a batch of EPUBs.
  2. Read failures before cosmetic observations.
  3. Download the PDF report.
  4. Fix a small batch and recheck.

A few things worth asking.

Is a missing series field an error?

No. Standalone books do not need one; it is displayed as context rather than a required correction.

Does this modify my metadata?

No. It reports observations. Use a separate editor to apply reviewed corrections.

Go to the source

Documentation consulted for the routes and terminology on this page. Product behavior can change; verify your exact setup.

W3C EPUB 3.3 specification

Written by Binge Reader. Our comparisons explain documented workflows and practical tradeoffs; they are not independent product benchmarks.

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