Is Repair PDF private?

Everything runs locally in your browser. Your files are never uploaded to StackPDF servers.

Do I need an account to use Repair PDF?

No. StackPDF is free to use without signing up or creating an account.

Does Repair PDF work offline?

After the page and libraries load, processing happens on your device. A connection is only needed to load the app the first time.

What kinds of PDF damage can be repaired?

Broken cross-reference tables, missing trailers, and junk appended after the file end are rebuilt automatically. Page content that was overwritten or zero-filled can't be recovered.

Can I repair a password-protected PDF?

Not directly. Remove the password first with the Remove Password tool, then run Repair PDF on the unlocked file.

Why is the repaired PDF a different size?

Repair rewrites the whole document with a fresh, clean structure, so the file size can shift slightly up or down. Page content is preserved.

Is Repair PDF free with no size limit?

Yes. Unlimited free repairs, no account, no upload paywall. Large damaged files process locally within browser memory.

Repair PDF Free (No Upload) — Private Browser Tool

How it works

1Drop your damaged or corrupted PDF into the workspace.
2Wait while the document structure is rebuilt automatically.
3Download the repaired PDF.

About

Repair PDF files that won't open because of a broken structure. StackPDF rebuilds the document entirely in your browser — the file never leaves your device.