All free tools
PDF tool · 100% free

Repair PDF

A PDF that will not open is often structurally damaged rather than genuinely lost: a broken cross-reference table, corrupted object offsets or a truncated download. This tool rebuilds the document structure around whatever content can still be read. It is free, needs no account, and adds no watermark to your result.

Built for: repair pdf
Deleted as soon as you download itFree · fair-use only
Drop PDF files herePDF output · up to 100 files
Included in this tool
Rebuild PDF structureClean broken referencesRecover readable pagesFresh optimized output
When you need this

What people use it for.

Recovering a file that a viewer refuses to open or reports as damaged
Fixing a PDF that was interrupted mid-download or mid-transfer
Salvaging a document written by software that produced malformed output
How it works

What happens to your file.

The file is parsed in recovery mode, page objects and references are rebuilt from the readable content, and a fresh, structurally clean document is written out.

Where it stops: Repair recovers structure, not content that was never written. If parts of the file are genuinely missing, those pages cannot be reconstructed.

What this tool includes

Everything you need, without a paywall.

Rebuild PDF structure
Clean broken references
Recover readable pages
Fresh optimized output
Questions

Common questions.

Can every damaged PDF be repaired?

No. If the bytes for a page were never written or were lost in transfer, nothing can recover them. Repair works when the content exists but the structure pointing to it is broken.

Will I lose formatting?

Generally no. Recoverable pages keep their text, fonts and images; it is the document scaffolding that is rebuilt.

Should I repair before converting?

Yes. If a document is failing in another tool, repairing it first often makes the conversion succeed.

Related free tools

You might also need.