Will the repaired PDF have all of its original pages?

The repair tool recovers as many pages as possible from the damaged file. The page count in the output depends on how much of the file is still intact. A preview is shown so you can verify the result before downloading.

Does repairing a PDF change its content?

No. The repair process only reconstructs PDF structural metadata - the cross-reference table and trailer. Actual page content, text, images, and fonts are not modified.

Is this PDF repair tool free?

Yes. The PDF repair tool is completely free with no registration, no file size limit, and no watermarks on the output. You can repair as many files as you need.

PDF Repair Tool

Recover corrupted, truncated, or damaged PDF files without uploading them to any server. The pdf repair tool rebuilds the internal cross-reference table and object structure, rescuing as many pages as possible from your broken file.

Drop your PDF here

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Upload a corrupted or damaged PDF to attempt recovery

PDF files only

Repair Strategy

1Xref Reconstruction - Rebuilds the cross-reference table and trailer from raw object data

2Page Extraction - Copies each recoverable page into a fresh, clean PDF document

3Partial Recovery - Reads progressively smaller file slices to find the largest intact prefix

Upload a corrupted PDF to begin

Upload a corrupted PDF and click 'Repair PDF' to recover it.

Why Use Our PDF Repair Tool?

Deep Structural Recovery

Rebuilds the PDF cross-reference table and object streams from scratch, recovering pages and content even when the original file structure is badly damaged or truncated.

Preview Before Saving

Inspect every recovered page as a thumbnail preview before downloading. Confirm the repair worked and see exactly how many pages were successfully rescued.

100% Private - Runs in Your Browser

Every repair operation runs locally in your browser using client-side JavaScript. Your PDF files never leave your device, ensuring complete privacy for sensitive documents.

Free with No Limits

Repair as many PDF files as you need with zero restrictions - no file size caps, no watermarks, no sign-up required, and no ads blocking the workflow.

Common Use Cases for PDF Repair Tool

Recover Interrupted Downloads

Fix PDFs that became corrupted during a partial or interrupted download - the repair tool reconstructs the file structure to restore readable pages.

Rescue Old or Archived Files

Recover important documents from old archives or backups where the PDF has degraded or become unreadable due to storage medium errors.

Fix Transfer Corruption

Repair PDFs that were corrupted during email attachment transfers, USB copy failures, or cloud sync conflicts that silently damaged the file.

Restore Client-Sent Documents

Recover PDFs received from clients or colleagues that fail to open in any viewer - useful for legal, financial, and medical documents that cannot be re-requested.

Recover from Software Crashes

Salvage PDF files that were being edited when an application crashed mid-save, leaving behind a truncated or structurally incomplete document.

Repair Cross-Reference Errors

Fix PDFs that display "cross-reference table rebuilt" or "file has been damaged" warnings by regenerating the internal object index from the raw file content.

Understanding PDF Repair

What is PDF Corruption?

A PDF becomes corrupted when its internal structure is damaged - this happens during failed downloads, abrupt power cuts during saves, storage hardware failures, or faulty file transfers. The PDF specification requires a precise internal layout including a cross-reference table, trailer dictionary, and properly formed object streams. When any of these are missing or invalid, PDF readers refuse to open the file, even if the majority of the raw content is intact.

How Our PDF Repair Tool Works

Upload: Drop your corrupted or truncated PDF into the tool. The repair engine reads the raw binary file bytes directly in your browser.
Reconstruction:The tool attempts to load the file using pdf-lib's recovery mode, which ignores checksum mismatches and rebuilds missing cross-reference entries by scanning the raw object stream for recoverable data.
Preview & Download: Successfully recovered pages are shown as thumbnails so you can confirm the result before downloading the repaired PDF.

What Gets Fixed During Repair

Broken Cross-Reference Table (xref): Regenerates the internal object index that PDF readers use to locate pages and resources.
Missing or Corrupt Trailer: Reconstructs the PDF trailer dictionary pointing to the document catalog and encryption dictionary.
Truncated File Structure: Recovers all objects found before the truncation point and writes a clean, valid file ending.
Object Stream Errors: Re-parses compressed object streams and recovers individual PDF objects that are still intact.

Limitations & Privacy

The pdf repair tool works entirely in your browser - your files are never uploaded to any server, ensuring complete privacy for sensitive legal, medical, or financial documents. Keep in mind that client-side repair has limits: if the raw page content bytes themselves are overwritten or fully missing, those specific pages cannot be recovered. The tool will always recover as many pages as possible and clearly report the page count of the output file.

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Frequently Asked Questions About PDF Repair Tool

The pdf repair tool can fix broken or missing cross-reference tables, corrupt or incomplete trailer dictionaries, truncated file endings, and damaged object streams. These are the most common causes of "file cannot be opened" or "file is damaged" errors in PDF readers. It cannot recover pages whose raw content bytes are completely overwritten or absent.

No. The entire pdf repair tool runs locally inside your web browser using client-side JavaScript. Your file is never transmitted to any external server. This means your private documents - contracts, medical records, financial statements - never leave your device.

This tool specifically targets structural PDF corruption - broken xref tables, truncated files, and malformed trailers. If your PDF opens but displays incorrectly, the issue may be font embedding, encoding corruption, or rendering driver problems rather than structural damage. Try downloading and opening the repaired file in a different PDF viewer first.

The repair tool recovers as many pages as possible from the damaged file. The number of pages in the output depends on how much of the file is still intact. The tool displays a preview of all recovered pages before you download, so you can verify the result. If only a partial file was recovered, the page count will reflect only what was salvageable.

The pdf repair tool works on unencrypted PDFs. If your corrupted PDF also has password protection, the repair process may not succeed because decryption requires a valid password and intact encryption metadata. Try removing the password with a separate tool first if the file is accessible, then use the repair tool.

No. The repair process only reconstructs the PDF structural metadata - the cross-reference table and trailer. The actual page content, text, images, and fonts are not modified. The output is a clean, valid PDF containing the same content that was present in the original undamaged portions of the file.

Yes. The PDF repair tool is completely free with no registration, no email required, no file size limit, and no watermarks on the output. You can repair as many files as you need.