Optimize PDF / Repair PDF
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Repair PDF

Rebuild corrupted, unreadable, or damaged PDF files.

Drop your document here

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Up to 50 MB free (up to 500 MB with Pro · batch up to 100 files)
Encrypted in transit and at rest - Automatically deleted within 24 hours
Optimize PDF · privacy-first workflow

Repair a damaged or unreadable PDF

Attempt a controlled PDF repair when a viewer reports a broken xref table, missing objects, or a malformed file structure.

01

Select the damaged PDF

Select the damaged PDF

02

Run structural recovery

Run structural recovery

03

Download and verify the repaired file

Download and verify the repaired file

Zero-Upload Client Privacy Mode

For repair a damaged or unreadable pdf, supported browser workflows can run locally with pdf-lib and WebAssembly so the source file never touches a server.

Built for practical PDF work

The repair a damaged or unreadable pdf workflow keeps the relevant controls close to the upload queue so you can finish one document job without a heavyweight suite.

Transparent safety controls

Before you download repair a damaged or unreadable pdf results, Paperplane validates the output and applies isolated storage, path containment, and lifecycle cleanup.

Why use Paperplane for repair a damaged or unreadable pdf?

CapabilityPaperplaneTraditional desktop suites
Browser zero-upload processingSupportedUsually unavailable
Dedicated Optimize PDF URLOne focused pageOne application shell
Installation requiredNo for web workflowsOften required

Frequently asked questions

What PDF problems can repair fix?

Repair can recover files with damaged cross-reference tables, inconsistent object offsets, or recoverable stream structure. It cannot reconstruct bytes that were never saved.

Will repair change the visible pages?

The repair process prioritizes preserving recoverable page objects. Always compare the result with the original because severely damaged files may lose unrecoverable content.

Is a repaired PDF safe to open?

The output is validated before download, but users should still treat untrusted PDFs as untrusted and use sanitize controls when removing active content matters.