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Repair PDF

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Recover and rebuild damaged or unreadable PDF files.

100% On-Device

Recommended Workflow

Repair broken XRef tables, restore unreadable PDF headers, and salvage damaged documents.

How to Use PDF Recovery & Diagnostic Tool

Fix damaged PDF files, rebuild missing cross-reference tables, restore truncated trailers, and recover readable pages directly in your browser.

1

Upload Damaged File

Drag and drop the broken, corrupted, or unreadable PDF document into the repair dropzone.

2

Reconstruct File Structure

Click 'Rebuild & Repair PDF' to initiate byte-level inspection, XRef rebuilding, and page recovery.

3

Download Clean Document

Inspect the diagnostic recovery report and download your standard-compliant, repaired PDF.

Frequently Asked Questions

Can all corrupted PDFs be repaired?
Most PDFs with broken indexes, truncated trailers, or syntax errors can be fully recovered. Severely zero-byte overwritten files may only have partial pages salvageable.
Will my formatting or text be lost?
No. Intact vector paths, embedded fonts, and raster images from recoverable pages are preserved exactly as in the original.
Is my confidential data sent anywhere?
Never. Repair processing is executed 100% on your device using WebAssembly and client-side JavaScript.

Related Document Tools

Logical next steps or alternative workflows for your document.

Compress PDF

Reduce document size with controlled quality.

Organize PDF

Reorder, rotate, and arrange PDF pages visually.

100% On-Device Document Recovery

Rebuilds broken xref tables and cleans corrupted stream objects directly in browser memory.

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Drop damaged or unreadable PDF here

Supports truncated files, damaged cross-reference tables, and unreadable trailers.

Supports truncated files, damaged cross-reference tables, and unreadable trailers.

Select PDF from Google Drive
or drop PDF here