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Structural repair
Detects and corrects broken cross-reference tables, corrupt headers, and malformed objects within the PDF.
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Repair PDF
Recover data from damaged PDFs when possible. Fix corrupt or damaged PDF files instantly with our free online tool. Recover content from broken PDFs, fix structural errors, and restore your documents — all processed locally in your browser with no file uploads needed.
No document data Download No Sign-up Required
01 / Add a file
Choose the damaged PDF
We’ll work on a new copy and leave the source file unchanged.
Select PDF files
or drop PDF files here
Single file · Max 256 MB
Core processing stays in this browser after the page loads. Large files use device memory and may run slower.
Repair PDF
Fix corrupt or damaged PDF files instantly with our free online tool. Recover content from broken PDFs, fix structural errors, and restore your documents — all processed locally in your browser with no file uploads needed.
Quick answer
How can I repair a corrupt PDF file online for free?
Upload your damaged PDF to the repair tool, which scans and rebuilds the file structure in your browser. Processing uses local libraries — no server upload, no account needed. Download the repaired PDF when done.
Privacy by default
Upload your damaged PDF to the repair tool, which scans and rebuilds the file structure in your browser. Processing uses local libraries — no server upload, no account needed. Download the repaired PDF when done.
How to repair a PDF file
How to repair a PDF file
Follow these simple steps to fix your corrupt document
- 01
Upload your PDF
Drag your damaged PDF into the upload area or navigate to select it from your device.
- 02
Repair the file
Click Repair and the tool will scan and rebuild the PDF structure automatically.
- 03
Download the result
Download your repaired PDF, ready to open normally in any viewer.
Why use our PDF repair tool?
Why use our PDF repair tool?
Powerful recovery features for damaged documents
02
Content recovery
Rescues text, images, and embedded data from partially damaged files where possible.
03
Browser-based processing
Repair runs completely in your browser with local libraries — your file is never uploaded to any server.
04
Quick results
Most PDFs repair in seconds regardless of file size, with no queues or waits.
05
100% private
Your document stays on your device throughout the entire process — ideal for confidential or sensitive files.
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No registration
No account or email required — open the tool and repair your PDF immediately.
FAQ
FAQ
Everything you need to know about PDF repair
What types of PDF corruption can be fixed?
The tool can fix structural problems like broken cross-reference tables, invalid headers, and malformed objects. Heavily overwritten files may not be fully recoverable.
Will all content be recovered?
Recovery depends on the level of file damage. Partially corrupted PDFs generally recover most content; heavily damaged files may have some data loss.
Is my PDF uploaded to a server?
No. The repair processing happens completely in your browser — your file never leaves your device.
What file size can the tool handle?
Processing is local, so practical limits depend on your device memory. Most files under 100 MB work fine on modern hardware.
What if repair does not fix my file?
If the PDF is too damaged, try opening it in a PDF reader with built-in recovery, or contact the source for a replacement copy.
Do I need to install any software?
No installation required. The tool works completely in your web browser on any device.
Learn before you process
PDF guides for this workflow
Get the answer, understand the trade-offs, then use the focused tool when you are ready.
How to repair a corrupted PDF
What to try when a PDF will not open, how the seven repair stages work, and why the last resort changes what you get back.
Read the repair guide
Best private PDF tools: browser-local vs cloud
A neutral guide to choosing a PDF tool when privacy matters: the questions to ask, a five-minute test you can run yourself, and which kind of tool fits which document.
Read the privacy guide
Comparing PDF tools? FreePDFKit vs iLovePDF · FreePDFKit vs Smallpdf · Browser-local vs cloud PDF tools