PDF Repair & Optimizer

Attempt to repair corrupted or damaged PDF files for free, right in your browser. Recover content without any software or account needed.

Drag & Drop PDF File Here

or

No file selected.
Repair Options
Share this Tool

Spread the word to help others work faster!

Related Tools

Add Page Numbers to PDF

Add page numbers to your PDF documents. 100% free and runs instantly in your browser.

Add Watermark to PDF

Stamp text or image watermarks onto PDF pages. 100% free and runs instantly in your browser.

CSV to PDF

Convert CSV spreadsheet data to a PDF document. 100% free and runs instantly in your browser.

Compress PDF

Reduce PDF file size without quality loss. 100% free and runs instantly in your browser.

DWG to PDF

Convert AutoCAD DWG files to PDF documents. 100% free and runs instantly in your browser.

Delete PDF Pages

Remove unwanted pages from your PDF files. 100% free and runs instantly in your browser.

EPUB to PDF

Convert EPUB e-books to PDF documents. 100% free and runs instantly in your browser.

Excel to PDF

Convert Excel spreadsheets to PDF format. 100% free and runs instantly in your browser.
PDF Document Recovery

Repair PDF

Fix broken, corrupted, or unreadable PDF documents by rebuilding the file structure and cross-reference tables locally.

Local PDF Structure Repair
STEP 01

Upload Corrupted PDF

Upload the broken or unreadable PDF file from your device.

STEP 02

Analyze Structure

The engine automatically parses the document stream to locate broken tables and missing pointers.

STEP 03

Rebuild Pointers

Reconstruct the cross-reference (xref) table indices and page tree dictionary nodes.

STEP 04

Save Repaired PDF

Compile the corrected document objects and download the functional PDF file.

Your Privacy Matters

All processing stays in your browser

No Server Uploads

Files never leave your device

Auto-Cleared

Data removed when you close

Capabilities

Recovery Capabilities

Repair Algorithms

Xref Table Rebuilding

Regenerate the cross-reference tables that map byte offsets, resolving key file offset errors.

Page Tree Restoration

Salvage corrupted catalog structures to restore the navigation structure of pages.

Damaged Header Correction

Repair missing, cut off, or malformed magic number headers that cause files to load as blank.

Raw Stream Extraction

Extract text and raw image bytes from damaged content streams where indexing has failed.

Absolute Client-Side Security

Your corrupted files are processed entirely inside your local browser memory sandbox. We never send your documents or recovered content to any remote server, keeping your data completely private.

Support

Common Questions Answered

Quick help
Q1 Can this tool repair any corrupted PDF?
It recovers files with offset mapping issues, page tree catalog errors, or incomplete table markers. Extremely corrupt files (zero bytes or overwritten structures) may be unrecoverable.
Q2 Will repaired files lose their original content?
The recovery engine works by reconstructing layout tables and markers, so standard visual blocks, text characters, and images are fully preserved.
Q3 Why do PDF files get corrupted?
Common reasons include interrupted file downloads, server transfer disruptions, system write crashes, or bad storage sectors on hard drives.
Q4 Can I repair password-protected PDFs?
Yes, you will simply need to specify the correct password during the repair phase if the file objects and stream structures are encrypted.
Q5 Are my private files uploaded to your server?
No. All file reconstruction, extraction, and rebuilding run offline in your browser. Files are never stored or processed online.