CONVERT TO PDF
Image to PDF Office to PDF HTML to PDF ZIP to PDF
CONVERT FROM PDF
PDF to Image PDF to Panoramic PDF to PDF/A
OPTIMISE
Compress PDF Repair PDF OCR PDF
EDIT
Add Page Numbers Add Watermark Edit Content Edit Text Add Signature
ORGANISE
Merge PDFs Split PDF Extract Pages Rotate Pages
SECURITY
Unlock PDF Protect PDF Redact PDF Flatten PDF

Repair PDF

Fix corrupted or damaged PDF files to make them readable again.

About PDF Repair

PDF repair is the process of fixing corrupted or damaged PDF files to make them readable again. Common issues that can be fixed include:

  • Corrupted file structure
  • Missing or damaged cross-reference tables
  • Truncated files
  • Improperly formatted content streams
  • Invalid object references

How It Works

Our repair tool uses a two-step approach:

  1. PyMuPDF Analysis: First, we analyze the PDF using PyMuPDF to identify specific issues and attempt targeted repairs.
  2. Advanced Reconstruction: If the primary repair method cannot fully fix the file, we fall back to our advanced processing engine, which rebuilds the PDF from scratch by reinterpreting its content.
While our repair tool can fix many common issues, some severely damaged PDFs may not be recoverable. In such cases, only partial content might be recovered.