Repair PDF Files Online Free

PDF won't open, throws errors or looks garbled? Rebuild it in one click with two repair modes to choose from

Drag your PDF here or click to browse files

Processed entirely in your browser · No file size limit

Why Choose Our PDF Repair Tool

Corrupted structure, files that won't open, persistent errors — we have a fix.

100% Private & Secure

Repairing runs entirely on your device. Your PDF is never uploaded, so your document only ever stays on your own computer.

Two Repair Modes

Quick repair preserves original content where possible; deep rebuild handles badly damaged files. Pick what suits your file.

Results in Seconds

Repair completes immediately and the fixed PDF starts downloading right away — no waiting.

Repair a PDF in Three Steps

From start to download in under a minute.

Choose Your PDF

Drag the PDF that won't open or throws errors into the dashed box, or click to browse local files.

Choose a Repair Mode

Pick Quick Repair for most cases, or Deep Rebuild when the file is badly damaged.

Download Your Result

Click the Repair PDF button and the fixed file is generated locally and starts downloading automatically.

Free Online PDF Repair Tool

Repair PDF is a fully web-based tool that fixes structurally corrupted PDF files right in your browser. Quick Repair uses PDF-lib to re-parse and rebuild the document structure while preserving text and layout as much as possible; Deep Rebuild renders every page to an image with PDF.js and repackages it — the most reliable option for badly damaged files.

A file that stopped halfway through a download, a document corrupted by a faulty program, or a PDF that shows garbled text or refuses to open — most of these issues can be resolved with a repair tool. And because your file never leaves your device, it's also the safest choice for confidential documents.

Common repair scenarios

  • Incomplete downloads — the file didn't finish downloading and its structure is missing; re-parsing makes it openable.
  • Files from buggy software — some programs export PDFs with non-standard structures that other readers reject.
  • Corrupted transfers — bytes damaged while the file was moved via email or cloud storage.

Why it beats desktop software

  • Works anywhere — no installation needed. Runs on Windows, macOS, Linux, iOS and Android.
  • Zero privacy risk — files are processed locally and never travel over the network.
  • Two repair strategies — pick the best repair method for the level of damage.

PDF Repair FAQ

Answers to the most common questions about repairing PDFs online.

Is repairing PDFs online really free?

Yes. It's completely free with no watermark — all processing happens locally in your browser.

What's the difference between Quick Repair and Deep Rebuild?

Quick Repair re-parses the document structure to preserve the original text and layout as much as possible. Deep Rebuild renders every page to an image and repackages it — more reliable for badly damaged files, but the text becomes unselectable.

Are my files uploaded to a server?

No. All files are processed locally on your device and never uploaded to any server. Your document only ever exists on your own computer.