Repair PDF

Fix corrupt, damaged, or unopenable PDF files instantly.

4.7/5 - 950 votes

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Table of Contents

Fix PDF Files Online

Restore corrupted or damaged PDF documents to a readable state. Our intelligent engine scans for errors and rebuilds your file structure.

1

Upload PDF

Select the damaged PDF file from your computer or drag and drop it into the box.

2

Auto-Repair

Our engine scans for missing objects, broken headers, and rebuilds the XREF index.

3

Download

Get your restored file instantly. We provide a clean, standards-compliant PDF.

What can we fix?

We specialize in fixing structural errors (broken XREF tables) and syntax issues that prevent standard PDF readers from opening a file.

Advanced Recovery

Rescue Your Data

Don't lose hours of work. Our repair tool attempts to salvage every possible byte using advanced forensic techniques.

Structural Rebuild

Rebuilds the internal XREF table and trailer, effectively creating a new container for your content.

Object Recovery

Scans for "orphaned" text blocks and images that became disconnected from the page tree.

Safe Process

Files are processed in ephemeral containers and deleted automatically. Your privacy is guaranteed.

Universal Reader

Uses industrial-strength parsing libraries (like MuPDF) that tolerate errors vastly better than standard readers.

RiseConvert Difference
FeatureBasic ToolsRiseConvert
Rebuild LogicHeader Fix OnlyDeep Object Scan
Stream DeflationNoYes (Optimized)
Legacy SupportLimitedPDF 1.0 - 2.0
ProcessingSlowInstant

When to use it?

Common scenarios where PDF files break and how we help.

Failed Downloads

  • Incomplete files
  • Internet dropouts
  • Server errors

Email Attachments

  • Encoding errors
  • Corrupt headers
  • MIME type issues

Drive Recovery

  • Files from bad sectors
  • USB stick errors
  • Restored data

Saved by the Tool

See how we helped users recover their important documents.

"I thought my thesis was gone forever after a crash. This tool opened it when Adobe Reader wouldn't!"

M
Michael R.
Researcher

"Had a corrupted employee contract scan. Uploaded it here and got a working file in 5 seconds."

J
Jessica T.
HR Manager

"Recovered most of my assignment. The images were a bit shifted but the text was all there. Livesaver."

A
Alan B.
Student
Reconstruction Engine

Recovering Data.
Byte by Byte.

A PDF file is a complex tree of objects (fonts, images, text blocks). When a transfer fails or a drive corrupts, links in this tree break, rendering the file unreadable.

Our repair engine uses Mutool's Garbage Collection Level 4. It parses the entire raw binary stream of the file, ignoring broke headers, and attempts to locate every orphan object.

It then Rebuilds the XREF Table (the map that tells viewers where everything is) from scratch. This process creates a valid, standards-compliant PDF container and places recovered content back into it, often salvaging 100% of the visible document.

Crafted by Security Engineers

XREF Rebuild

Generates a fresh cross-reference table for valid navigation.

Object Discovery

Scans binary data to find images and text even if headers are missing.

Stream Cleanup

Removes corrupted bytes and deflates streams for cleaner files.

Understanding PDF Corruption

A PDF file starts with a header (e.g., `%PDF-1.7`) and ends with a trailer containing an EOF marker. In between, there is a complex web of numbered objects referencing each other via byte offsets listed in an XREF table at the end of the file.

Most "Corruption" happens when this XREF table is damaged or truncated (often due to an incomplete download). PDF viewers rely on this table to know where page 1 starts vs page 2. If the table is wrong, the viewer sees a blank screen or an error.

RiseConvert's repair tool ignores the broken table. Instead, it "brute-forces" the file, reading every byte to recognize object patterns (like `1 0 obj ... endobj`) and builds a new, valid table from scratch.

Corruption vs. Reality: At a Glance

Component
Damaged State
Repaired State
Header
Missing / Invalid
Restored (PDF 1.7)
XREF Table
Truncated
Rebuilt from scratch
Objects
Unreachable
Indexed & Linked
Metadata
Corrupt
Cleaned
File Structure
Linear / Broken
Optimization Tree

Repair Glossary

XREF Table

Cross-reference table. The map/index at the end of a PDF that tells the reader where every object is located.

EOF Marker

End Of File. A marker indicating the file is complete. Missing EOF is a common corruption.

Garbage Collection

The process of removing unused or invalid objects to clean up a file structure.

Corrupt Header

When the starting signature of the file is missing or invalid.

Mutool

The powerful engine powering our repair logic, capable of deep binary analysis.

Linearization

Organizing the PDF for fast web view. Repair often restores this property.

Common Realities of Repair

Recovering Zeroed Data

We cannot recover data that isn't there. If your hard drive wrote '0's instead of your file content, no tool can bring it back.

Formatting Shifts

Sometimes, to save the text, we might lose a font reference, causing the font to change. This is a necessary trade-off for recovery.

Best Practice

Always keep backups. But when backups fail, this tool is your best "last resort" for digital forensics.

Frequently Asked Questions

Privacy-First Architecture

Automated Recovery.
Zero Retention.

We repair your file and then we forget it existed.

Auto-Wipe

Files are automatically purged from our servers immediately after processing.

Encrypted Tunnel

We use TLS 1.3 to ensure your data transfer is secure.

Live Security Specs
TLS 1.3
Tranport Security
100%
Automated Cleanup
"Your data is yours. We just help you recover it."

About the Author

Author

Abu Nayem

SaaS Architect & Full Stack Dev

Building high-performance tools with Next.js and Python. Focused on privacy-first architecture and seamless UX.

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