Repair PDF
Rewrite the document with a clean object tree, which fixes many files other readers reject.
Repair PDF online, free and without limits
A PDF that was interrupted mid-download, written by a buggy exporter, or recovered from a failing drive will often refuse to open — or open in one reader and not another. Repair rewrites the document with a clean object tree and a correct cross-reference table, which resolves a large share of these cases. It cannot invent data that was truly lost, but where the content is still present and only the file's index is broken, the result opens normally again.
How to repair a damaged PDF
- 1
Upload the PDF that will not open properly.
- 2
Press Repair PDF — no settings are required.
- 3
Download the rebuilt file and try opening it.
- 4
If it still fails, the underlying page data is likely gone rather than misindexed.
What you get
- Rebuilds the cross-reference table that most readers rely on.
- Drops orphaned and unreferenced objects, which often shrinks the file too.
- Frequently fixes files that open in one reader but not another.
- Content that survives is preserved exactly; nothing is re-rendered.
Questions about Repair PDF
What people usually want to know before they upload a document.
Can you recover a PDF that is completely corrupted?
Only if the page content still exists inside the file. Repair fixes structural damage — a broken index, a truncated trailer, malformed objects. If the bytes holding a page were lost, no tool can bring them back.
My PDF opens but shows errors or missing fonts. Will this help?
Often, yes. Rewriting the object tree resolves many font and resource reference problems that cause warnings on open.
Is repairing the same as compressing?
No, though repair usually shrinks the file as a side effect of removing unreferenced objects. Compress PDF targets image data specifically.
Related tools
Other things you can do with the same document.