Repair PDF: Free Online PDF Repair Tool
Fix corrupted, damaged, or unreadable PDF files instantly — 100% private, all in your browser.
Corrupted PDF files can be a nightmare, especially when they contain important documents. Our PDF repair tool attempts to fix damaged, truncated, or unreadable PDF files by reconstructing the document structure, recovering readable pages, and salvaging available content. Whether your PDF won't open, displays errors, or shows blank pages, our repair process can often recover your data. The entire repair happens locally in your browser — no files are uploaded to any server, ensuring complete privacy for your sensitive documents.
🔒 100% Client-Side Processing
🔧 Fix Corrupted PDFs
📄 Recover Readable Pages
🛠️ Reconstruct Structure
⚡ Instant Repair
💾 Download Repaired PDF
🆓 Completely Free
💡 How it works: Upload your corrupted PDF, choose repair mode, and click "Repair PDF". The tool attempts to load the file, extract readable content, and create a new, clean PDF with all recoverable pages.
⚠️ Note: Repair success depends on the extent of corruption. Files with minor corruption often recover fully, while severely damaged files may only yield partial recovery. Always keep backups of important documents.
🛡️ Privacy Guarantee: All repair operations happen locally in your browser. Your file never leaves your device, ensuring complete confidentiality for sensitive documents.
🔧 Repair PDF - Fix Corrupted Files
📄 Upload a corrupted PDF to attempt recovery and repair.
or drag & drop a PDF file here
Frequently Asked Questions about PDF Repair
What types of PDF corruption can this tool fix?
The tool can handle various corruption types including: incomplete downloads, truncated files, header corruption, cross-reference table issues, and some structural damage. It works by attempting to load the PDF, parsing whatever content is readable, and reconstructing a new PDF with recoverable pages. Severely damaged files may only yield partial recovery.
How does the repair process work?
The tool uses pdf-lib to attempt loading your PDF. If loading fails, it attempts to recover readable content by parsing the raw data. For files that load but have issues, it creates a new PDF by copying all pages, which often resolves structural problems. Aggressive mode tries more recovery attempts for severely damaged files.
Will all content be recovered?
Recovery depends on the extent of corruption. Minor corruption often results in complete recovery. For severely damaged files, you may recover only some pages or partial content. The tool salvages as much readable data as possible. Always check the repaired PDF to verify content.
Is my document secure during repair?
Absolutely! The entire repair process happens locally in your browser using pdf-lib. Your PDF never leaves your computer — no uploads to any server. This ensures complete privacy for your documents, even when attempting to recover sensitive files.
What's the difference between Standard and Aggressive repair?
Standard repair attempts to load the PDF normally and reconstruct a clean copy. If that fails, it tries basic recovery. Aggressive mode uses more recovery attempts and attempts to salvage content even when the PDF structure is severely damaged. Start with Standard mode, then try Aggressive if needed.
Can you repair password-protected PDFs?
This tool repairs structural corruption, not password removal. If you have the password, you can unlock the PDF first using an unlock tool, then repair if needed. Password-protected PDFs require the password to be accessed before repair.
Will this work on mobile devices?
Yes! The tool is fully responsive and works on smartphones and tablets. You can upload corrupted PDFs from your device storage and attempt repair directly in your mobile browser.