Repair PDF
Recover a PDF that won’t open, or throws an error when you try — free.
Drop your file hereTap to add your file
or click to choose · sent securely, deleted right after
Private by design. Your file is sent over an encrypted connection, processed in an isolated sandbox with no internet access, then deleted the instant it’s done. We never store it or read it. How this works
Repair PDF rescues a file that has become damaged — the kind that won’t open, shows “file is corrupt”, or fails partway through loading. Most of the time the actual content is still there; what’s broken is the PDF’s internal structure — its cross-reference table and object index — usually from an interrupted download, a bad transfer or a crash while saving. Repair rebuilds that structure so a reader can open the file again.
It runs on Ream’s hardened server: your file is sent over HTTPS, rebuilt in an isolated sandbox, and deleted immediately afterwards. Free, no sign-up, no watermark.
How it works
Ream first rebuilds the file with a PDF engine that reconstructs the damaged cross-reference table and recovers the readable objects. If that isn’t enough, it falls back to re-processing the document through a second engine, which rewrites it from the ground up. Between the two, most structurally damaged PDFs open cleanly again. What repair cannot do is invent content that was never fully written — if a download stopped at half the file, only that half can be recovered.
How to Repair PDF
Add the damaged PDF
Drop the file onto the box above or click to browse.
Run Repair PDF
Ream rebuilds the structure and recovers what it can.
Download the fixed PDF
Save the repaired file — your upload is deleted from the server straight after.
What it can and can’t fix
| Problem | Repairable? |
|---|---|
| “File is damaged / corrupt” on open | Usually yes |
| Broken cross-reference table after a crash | Usually yes |
| Reader loads blank or errors partway | Often |
| Download stopped halfway (file is incomplete) | Only the part received |
| Password-protected (not corrupt) | Use Unlock PDF instead |
Why do PDFs get corrupted?
It’s almost always a transfer or save problem, not the content itself: an interrupted download or email attachment, a USB stick pulled out mid-copy, a program that crashed while exporting, or a sync conflict in cloud storage. The bytes that describe where things are in the file get truncated or scrambled, so the reader can’t find the pages — even though they’re still in there. Rebuilding the index is what brings the file back.
Before and after repairing
- If you have the original source (a Word file, a scan), re-exporting is always the cleanest fix — repair is for when the PDF is all you have.
- Got the file from a download? Try downloading it again first, in case the copy was simply incomplete.
- After repairing, you can compress it or clean its metadata as normal.
Why choose Ream
Two repair engines
Rebuilds the structure, and falls back to a full rewrite if the first pass isn’t enough.
Recovers the readable content
Gets back the pages and data that survived the damage.
Processed, then deleted
Sent over HTTPS, rebuilt in an isolated sandbox, and deleted immediately after.
Free, no watermark
No account, no watermark, no limits.
Frequently asked questions
Can you recover a PDF that won’t open?
Usually, yes — if the problem is a damaged structure (the most common cause), Repair rebuilds it so the file opens again.
My download stopped halfway — can you fix it?
Only the part that was actually downloaded can be recovered. If the file is incomplete, try downloading it again first.
The PDF asks for a password — is that corruption?
No, that’s encryption. Use Unlock PDF if you know the password.
Will repairing change my content?
No — it rebuilds the file’s structure around the existing content. Nothing is added or rewritten on the pages.
Is my file stored anywhere?
No. It is rebuilt in an isolated sandbox and deleted immediately afterwards.
Is it free?
Yes — free, no sign-up, and no watermark.