How to use Repair PDF
- 1
Open the damaged PDF.
- 2
Press Repair PDF. The tool reads what it can and rewrites the file.
- 3
Read which problems were found and fixed.
- 4
Download the repaired copy and open it in your usual reader.
What this tool does
Repair PDF reads a PDF the way a forgiving parser would, finds where the pages really are, and writes a new file with a correct structure. Many readers refuse files whose index is wrong, even when the page data is intact, and rewriting the structure is often enough to open them again.
Features
- Structure rebuild: fixes the object index, the trailer and the page list.
- A plain report of what was found and fixed, or a note that the file was already healthy.
- A clean copy of healthy files, with the page count.
Limits
- It cannot recover data that is missing from the file, such as the end of a truncated download.
- Objects that cannot be read are dropped from the copy.
- It does not open files that need a password; use Unlock PDF first.
- One PDF at a time.
Where your file is processed
This tool works in your browser: your PDF is processed on your own device, so it isn't sent to our server for this tool. Some other tools on UtiloNest do use our server, and their pages say so.
Frequently asked questions
What kind of damage can this fix?
Problems in how the file is put together, such as a missing or wrong object index, a file cut off before its end marker, a broken trailer or a broken list of pages. It rebuilds that structure so the pages can be found again.
Can it bring back pages or text that are missing?
No. If the data is not in the file, nothing can recover it. This happens with truncated downloads and failed saves. Objects that are too damaged to read are left out, and the result says so.
What if my PDF is fine?
You get a clean rewritten copy, and the result says no problems were found.
Does it work on password-protected PDFs?
Not on ones that need a password to open. Unlock the file first with Unlock PDF.
What if the repair fails?
Then the file is too damaged to read, or it is not a PDF at all. Try getting the file again from its source, or look for an earlier copy.