Repair PDF

Fix a PDF with minor structural damage, entirely in your browser.

🔒 Processed on your device

Drop your PDF here

or choose a file from your device

What is a Repair PDF?

A PDF that won't open, shows a corruption error, or opens with garbled pages usually has damage in its internal cross-reference table — the index a PDF viewer uses to locate each object — often from an interrupted download, a crash during editing, or an incremental save that didn't finish cleanly. Repair re-parses the file from raw bytes and rebuilds that structure from scratch.

How to use the Repair PDF

Add the damaged PDF file
It's fully re-parsed and rebuilt from scratch, on your device
Download the repaired PDF

Example

A PDF that a viewer reports as "damaged and could not be repaired" after an interrupted download will frequently open normally once run through here, since the actual page content is usually intact — only the index pointing to it is broken.

Why use Repair PDF

Rebuilds the file's structure from scratch

Re-parses the raw bytes and reconstructs the cross-reference table a corrupted index left broken.

Content stays untouched

Only the internal structure is rebuilt — every page's actual text, images, and layout survive exactly as they were.

Tells you honestly if it can't help

If the underlying page data itself is damaged, not just the index, you're told that rather than handed a silently broken file.

What can you create?

Reopen a PDF a viewer refuses to load

Fix a file that reports as corrupted or damaged after an interrupted download or a crash mid-save.

Recover from a bad incremental save

Rebuild a document whose index broke partway through an editing session that didn't finish cleanly.

Sanity-check a file before sending it on

Run a PDF through repair before forwarding it, so a structural issue doesn't become the recipient's problem.

Frequently asked questions

Is my PDF uploaded anywhere?

No — Repair PDF runs entirely in your browser using JavaScript/WebAssembly. Your PDF is never sent to a server.

Is there a file size limit?

Free use covers files up to 100MB per file; signing up for Pro raises that to 500MB.

Will this fix any damaged PDF?

It fixes minor structural damage — broken cross-reference tables, incremental-save corruption — by fully re-parsing and rebuilding the file. If the underlying page/object data itself is too damaged to read, this in-browser tool will tell you rather than guess; that level of damage needs a deeper server-side repair we don't offer yet.

What if this doesn't fix my PDF?

It tells you rather than producing a silently broken file — if the underlying object data itself is too damaged to reconstruct, not just the index, that's beyond what an in-browser repair can recover, and you'd need the original source document instead.

Does repairing change any of the actual content — text, images, layout?

No — only the file's internal structure is rebuilt; every page's visible content stays exactly as it was, assuming the content itself was intact.