Document recovery workflow

Structure analysisReference rebuildingLocal recovery

Repair damaged PDF files.

Rebuild damaged PDFs when the readable structure can be recovered. Run analysis and recovery in your browser session for standard workflows.

Input
Damaged PDF
Runtime
Browser repair
Output
Recovered PDF
Repair PDFCompress PDFView metadataMerge PDFs

Drop a PDF to repair

Check whether a PDF is readable, run structure repair, and download a rewritten compatibility copy.

Local processing · up to 50MB per file
How to use Repair PDF
  1. 01

    Select damaged PDF

    Choose the corrupted PDF file. It is loaded into your browser session for local analysis.

  2. 02

    Analyze and repair

    The engine identifies structural issues and rebuilds damaged references or streams where possible.

  3. 03

    Download repaired file

    A repaired PDF is generated locally and prepared for download in the same session.

Repair should explain recoverability instead of promising miracles.

Structure analysis

The engine inspects objects, references, and streams to identify corruption points in the file.

Local reconstruction

Damaged internal structures are rebuilt where possible to restore readability and output integrity.

Private processing

Repair runs in the browser session so sensitive documents stay on your device during processing.

Document privacy

For standard workflows, repair is performed locally without a third-party upload queue.

Deep recovery

Advanced repair logic can recover many common corruption issues that prevent files from opening.

Recovery limits

Not every damaged PDF is recoverable. The workflow creates a best-effort repaired output.

Repair corrupted PDF files in a local browser workflow

Corrupted PDF files can block critical workflows. Many repair tools require uploading files to remote servers before analysis. DocuStitch removes that step for standard workflows.

Why local repair matters

Repair operations run in your browser session using WebAssembly (WASM), so documents stay on your device during processing.

Structure-aware recovery

The engine analyzes object trees and references to rebuild damaged structures where possible.

Structure analysis

Inspects PDF internals to identify damaged objects and references.

Data recovery

Rebuilds recoverable sections of corrupted documents.

Integrity restoration

Attempts to restore valid internal document linking and output consistency.

Fast execution

Runs locally without waiting on a remote processing queue.

Frequently asked questions about Repair PDF
Is it safe to repair sensitive PDFs online?

DocuStitch is designed for local-first processing, so standard repair workflows run in your browser session without a separate upload queue.

Can all corrupted PDFs be repaired?

Not all files are recoverable, but many common structural corruption issues can be fixed.

Will the repaired PDF match the original?

The goal is to preserve readable content and structure while fixing damaged internal references.

What corruption types can be fixed?

Common issues include broken cross-references, damaged object streams, and structural inconsistencies.

Do I need to install software?

No. The workflow runs in modern browsers with WebAssembly support.