PDF Unlock for Editing in-browser

Unlock form fields while keeping the signature cryptographically valid (incremental update), or make the file fully editable by flattening or removing the signature and stripping certification, read-only, and encryption locks. Runs locally; nothing is uploaded.

1. PDF

Live unlock with VS Code

Auto-unlock new or changed PDFs in the folder

How the live workflow works

Click Open a folder and pick your project folder (grant read and write). Open the same folder in VS Code with the Open VS Code button (File, Open Folder in vscode.dev).

Drop or save a locked PDF into that folder. This tool watches it and writes a <name>-unlocked.pdf next to each one, automatically. Files already ending in -unlocked.pdf, and ones that need a password, are skipped.

Mode

Appends an incremental update that unlocks text and checkbox fields. The existing signature stays cryptographically valid (no signed bytes are changed).

Idle. Add a PDF to begin.

Fully client side. Keep signature valid appends an incremental update with pdf-lib that only clears read-only and field locks, leaving every signed byte untouched. Make fully editable rewrites the file: pdf-lib strips SigFlags AppendOnly, certification Perms/DocMDP, XFA and signatures, and qpdf (WebAssembly) removes password or permission encryption. Engines load only when used.

Preview

The unlocked PDF will appear here.

Details