Repair PDF Fix Corrupted Documents

Attempt to repair damaged or corrupted PDF files. Re-builds the PDF structure to recover readable content. Free, no upload.

✓ 100% Free🔒 Files Stay On Device✦ No Watermark

ℹ️ Repair works best on structurally damaged PDFs. Severely corrupted files may not be fully recoverable. Always keep a backup of your original file.

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Drop your damaged PDF here

or click to browse — up to 200 MB

0 / 1 filesMax 200MB per file

How to Repair a Corrupted PDF — Step by Step

A corrupted PDF may fail to open, display garbled content, or show an error in your PDF reader. Doclair's repair tool re-parses the raw PDF stream and attempts to recover a valid document from the remaining data.

Drop your PDF or click to upload. Select the corrupted or damaged PDF file from your device.
Doclair parses the raw PDF bytes and reconstructs the structure. The tool rebuilds the cross-reference table and recovers readable objects from the file.
Download the repaired PDF and try opening it in your PDF reader. Most structurally damaged PDFs will open normally after repair.

What causes a PDF to become corrupted?

PDFs can become corrupt during a failed download, interrupted email transfer, disk write error, or improper export from another application. Partially downloaded PDFs are the most common case. The repair tool works best on PDFs with structural issues — severely damaged files with missing data may not be fully recoverable.

Repair PDF on iPhone and Android

Doclair works in Safari and Chrome on mobile. Upload your corrupted PDF from the Files app and download the repaired version directly to your device.

Frequently Asked Questions

This tool can fix structural corruption — incomplete object tables, malformed cross-reference streams, and broken object references. It works best on PDFs that fail to open but have most of their data intact.

Recovery depends on the extent of damage. Structurally damaged PDFs can usually be fully recovered. Severely truncated or overwritten files may only have partial content recoverable.

Yes — this tool uses encryption-ignoring mode which can process some encrypted PDFs even without the password, though decrypted content may not be accessible.

No. The repair runs entirely in your browser using @cantoo/pdf-lib. Your file never leaves your device.

If the file is too severely corrupted for structural repair, some content may be unrecoverable. Try opening the repaired file in Adobe Acrobat for additional recovery options.

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