Freeallpdf
Optimize PDF

Repair Damaged PDF

Reconstruct corrupted PDF headers, recover broken streams, and restore unreadable files.

Drag & drop your PDF file here

or click to browse • paste with Ctrl+V

Max file size: 50 MBClient-Side Processing (In-Browser)

What is Repair PDF?

Getting errors like "PDF file damaged", "Cannot open file", or "Corrupted stream" when trying to open an important document? Network drops, bad USB transfers, and crashed software can corrupt the PDF cross-reference (XREF) index. Freeallpdf Repair PDF comes to the rescue.

Our diagnostic engine scans the raw byte stream of your file, identifies surviving document pages, repairs broken XREF tables, rebuilds the catalog dictionary, and synthesizes a compliant, readable PDF file.

Recover your critical contracts, research papers, and receipts before giving up on them.

How to Use Repair PDF

Follow these simple steps to process your files in seconds.

1

Upload Damaged PDF

Select the broken or corrupted PDF file that fails to open properly.

2

Run Diagnostics

Our engine parses raw byte sequences to locate surviving page objects.

3

Rebuild Structure

Broken cross-reference tables and corrupt headers are synthesized.

4

Download Repaired PDF

Save your recovered, fully compliant and readable PDF document.

Key Features

Recovers files with corrupted cross-reference (XREF) tables and broken headers
Tolerant byte stream parsing locates readable pages even in damaged containers
Resynthesizes compliant PDF trailer dictionaries for standard reader viewing
In-browser recovery ensures confidential damaged documents remain private
Completely free with no credit card or account required

Why Use Our Repair PDF?

Rescue Critical Files

Recover important contracts, tax documents, or thesis papers that refuse to open.

Fix Transfer Glitches

Repair PDFs corrupted during interrupted downloads or faulty USB flash drive copies.

Total Security

Corrupted documents are processed locally on your device.

Frequently Asked Questions

Everything you need to know about Repair PDF and document privacy.

If the core text and image byte streams are still present in the file, our engine can almost always rebuild the structural container. Files that are completely zero-byte or 100% overwritten cannot be recovered.