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Check whether PDF files match a saved file record

A PDFEazy file record stores SHA-256 hashes of the source files and the finished PDF. Later, you can compare files with that record to see whether their bytes match. This is useful when handling revisions, supporting documents or a document pack assembled by an AI agent.

Save a record with your PDF

  1. Create a PDF in PDFEazy.
  2. Download the finished PDF and its file-record.json.
  3. Keep the record separately if you want a useful comparison reference.
  4. Open Verify a file record, select the record and the files you want to check, then compare.

Understand the result

Matches means a selected file has the expected hash. Changed means a same-named source file was supplied but its bytes differ. Not supplied means none of the selected files match that entry; a renamed or changed file may need manual investigation.

Does this prove a PDF is authentic?

No. Anyone able to replace both a PDF and its record can create a new matching pair. The record has no trusted digital signature or timestamp. Hash comparison checks agreement with your reference; it does not verify an issuer, legal validity, factual accuracy or whether the reference itself is trustworthy.

Will harmless edits change the hash?

Yes. Saving a PDF in another editor, changing metadata or re-encoding an image can change the bytes even when pages look the same. Investigate the difference rather than assuming fraud. Keep originals alongside generated documents.

Open the tool

Updated 18 October 2026 by the PDFEazy team.

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