Skip to content

About HushPDF

Private by design

  • Files are processed in your browser — never uploaded, tracked, or stored.
  • Free & open source (MIT) — audit, self-host, or fork it.

Limitations

  • Password-protected PDFs aren’t supported.
  • Up to 50 MB per file (150 MB total when merging).
  • It edits the finished PDF, not the Word or design file it was made from.
  • Forms, annotations, or signatures may not carry over when pages are copied.
  • Signatures are images (e-signatures), not certificate-based digital signatures.
  • Typed text supports Latin, Greek, Cyrillic, Bengali, Devanagari and Arabic.
  • Compression helps most with scanned or image-heavy PDFs.
  • OCR (beta) downloads a language model on first use; your pages stay on your device.
Esc

Repair a PDF

Fix a damaged PDF

How it works

Recover a damaged PDF that won’t open or shows errors, by rebuilding its internal structure.

  1. Add the damaged PDF.
  2. Choose “Repair PDF”.
  3. Download the repaired file and check it.
  4. If it still won’t open, the damage may be beyond automatic repair.

Questions

What can be repaired?

Broken cross-reference tables, wrong offsets and cut-off file endings are common and usually fixable. Content that is truly missing can’t be recovered.

Are my files uploaded to a server?

No. Every operation runs locally in your browser using JavaScript (pdf-lib, with page previews from PDF.js). Your documents are never transmitted to us or to any third party, and there are no accounts, watermarks, or file-retention tricks. You can even disconnect from the internet after the page loads and the tools still work.