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Protect PDF with Password

Lock a PDF with a password so only authorised recipients can open it. This tool is coming soon — PDFKat is working on browser-based PDF encryption support.

Coming Soon

Browser-based PDF password protection requires cryptographic support that PDFKat is actively working to add. Check back soon.

Try Watermark PDF instead

How to use Protect PDF with Password

  1. 1Upload one PDF file.
  2. 2Enter the password you want to set.
  3. 3Select Protect PDF.
  4. 4Download the password-protected PDF.

Privacy-first processing

When available, this tool will process your PDF locally in your browser without uploading to a server.

FAQs

When will Protect PDF be available?

Browser-based PDF encryption requires additional cryptographic support. This tool is planned for a future PDFKat update.

What alternatives can I use now?

For password protection, PDF24 and LibreOffice (desktop) can add passwords to PDFs for free.

Will the password protect against all access?

PDF password protection prevents casual access. Determined users with specialised tools can sometimes bypass it. For highly sensitive documents, consider additional encryption.

Related PDF tools

Merge PDFCombine multiple PDF files into one clean document.Compress PDFReduce PDF file size directly in your browser.Watermark PDFAdd a diagonal text watermark to every PDF page.Unlock PDFRemove password protection from a PDF you own.

Best for quick document work

PDFKat is built for simple everyday PDF tasks on desktop and mobile browsers. For best results, use files that are not password-protected or restricted.