Repair PDF – Fix Damaged PDF Files
Fix PDFs that won't open, show error messages or have broken pages.
Upload a Damaged PDF to Repair
Drag & drop your file here, or click to browse
Choose PDF FileHow to Repair a PDF in 3 Easy Steps
Recover the content of a damaged PDF in seconds.
Upload the Damaged PDF
Drag and drop the PDF into the box above, or click Choose PDF File. Files up to 50 MB are supported.
Click Repair PDF
We check the file's structure and rebuild what's broken. If the first method fails, a second, deeper rebuild is tried automatically.
Download the Fixed PDF
Click Download and open your repaired PDF in any reader.
What Repair PDF Can Fix
Common problems that stop a PDF from opening or displaying properly.
"File Is Damaged" Errors
Fixes PDFs that show errors like "There was an error opening this document" or "The file is damaged and could not be repaired".
Broken Downloads
Rebuilds PDFs that were cut off or corrupted during download or email transfer.
Broken Structure
Rebuilds the cross-reference table and objects that tell readers where each page is.
Two Repair Methods
If the quick repair doesn't work, a deeper rebuild recreates the PDF from what can still be read.
Private and Secure
Encrypted upload, isolated processing and automatic deletion within 1 hour.
Free, No Watermark
No sign-up and no Toolszu logo in your PDF.
Good to Know
- Not every file can be saved. If parts of the PDF were never downloaded or are completely overwritten, those parts can't be recovered.
- Downloaded file won't open? Try downloading it again first — the copy on the website may be fine.
- Password-protected PDF? Remove the password first with Unlock PDF.
- Fixed, but too big? Make it smaller with Compress PDF.
Frequently Asked Questions
Quick answers about repairing damaged PDF files.
Upload the PDF on this page and click Repair PDF. We rebuild the file's structure automatically. When it's done, click Download.
Usually because the download was interrupted, the file was saved incorrectly by another program, or it was changed during transfer. This breaks the internal table that tells PDF readers where pages are.
Most PDFs with structural damage can be fixed. But if parts of the file are missing or overwritten, those parts can't be recovered.
Your PDF's structure is fine. If it still doesn't open, the problem may be your PDF reader — try opening it in Chrome or another reader.
No. Repair only fixes the file's internal structure. Your text, images and pages stay the same.
You can upload PDFs up to 50 MB and 500 pages, and convert up to 20 PDFs per day for free. The daily limit resets every day.
Yes. Open this page in Safari, Chrome or any mobile browser, choose your file and tap the button. No app is needed.
Yes. Your file is sent over an encrypted connection, converted in an isolated sandbox with no internet access, never shared with anyone and deleted automatically within 1 hour. You can also delete it right away with the Delete now button.
Yes, it's 100% free. There's no sign-up, no premium version and no watermark or Toolszu logo added to your file.
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