Free Protect PDF
Password-protect a PDF with AES encryption entirely in your browser. Coming soon - browser-based encryption is still being added.
Password protection is not yet available in the browser. This tool is coming soon - browser-based PDF encryption is still being added.
Drop files here or browse
PDF · Max 100 MB
Your files never leave your device.
Frequently Asked Questions
OCRFire is working on browser-based AES PDF encryption. This feature is coming soon - implementing the PDF security spec correctly in WebAssembly requires careful testing for compatibility across all major PDF viewers.
Browser-based AES encryption for PDFs requires a precise implementation of the PDF 1.7+ security spec. We're adding it carefully to ensure the resulting files open correctly in Adobe Acrobat, Preview, Chrome, and other viewers.