PDF Verify & Repair — what it does
A health check for a PDF that will not open, opens with errors, or is being submitted somewhere that validates it: the header, cross-reference table, trailer, end-of-file marker, page counts and metadata are all inspected, and digital-signature information is reported.
How to use PDF Verify & Repair
- Open the suspect PDF.
- Run the check — each structural element is reported as present, absent or inconsistent.
- Read the signature section if the file is signed; it reports whether signature information is present in the document.
- Use the findings to decide whether to re-export from the source application or to re-download the file.
Worked example: a tender upload that keeps failing validation
A portal rejects a PDF with no useful error. The check shows the file has a broken cross-reference table — common when a download was interrupted — which explains the rejection and tells you to re-download rather than re-export. When the structure is clean instead, the problem is on the portal's side and worth raising with support.
At a glance
| Checks | Header, cross-reference table, trailer, end marker, page count, metadata |
|---|---|
| Signatures | Reports digital-signature information present in the file |
| Output | A readable diagnosis of what is structurally wrong |
| Where it runs | On-device in your browser |
| Honest limit | It diagnoses structure; deeply corrupted page content may be unrecoverable even when the shell looks intact |
Frequently asked questions
- What is PDF Verify & Repair?
- Run a health check on any PDF — header, cross-reference, trailer, end marker, page counts and metadata are inspected, and digital-signature fields are detected. Then download a repaired copy (xref/trailer rebuilt) or rebuild pages from images for files that can't be parsed. Fully on-device.
- Is PDF Verify & Repair free to use?
- Yes — PDF Verify & Repair is free to use, with no sign-up, no install and no account.
- Does PDF Verify & Repair upload or store my data?
- No — PDF Verify & Repair runs entirely in your browser, so your text, files and results never leave your device.
- Do I need to install anything to use PDF Verify & Repair?
- No — it works in any modern browser (Chrome, Edge, Firefox, Safari) with no downloads, accounts or plugins.
- Can it actually repair a broken PDF?
- The value is the diagnosis: most 'broken' PDFs are broken in one of a handful of ways, and knowing which one tells you whether to re-download, re-export or re-scan. Where the damage is in the file's structure, the report tells you what a repair would need to fix.
- Does it verify that a signature is valid?
- It reports the signature information present in the document, not a trust-chain validation against a certificate authority. For legal verification of an Aadhaar eSign or DSC signature, use the verifier provided by the signing service.