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No uploads, no waiting, no third-party servers. Crafex password-protects your PDF right in the tab — 100% client-side WASM processing, zero-server — from select to download, the file never leaves your device.
private, processed locally
Drop PDF files here, or browse
0 file(s) attached
edit-layout • 100% private, processed locally • Password protect PDFs directly in your browser free — WASM-based, no upload, 100% private, no server ever involved
Browser-based means the file stays local — close the tab and nothing persists.
Use a passphrase rather than a word — length beats complexity for PDF passwords.
Test the locked file in a second PDF viewer to confirm universal enforcement.
Category
edit-layout
PDF Organization tool
Engine
Browser-Based
pdf-lib / pdfjs-dist / tesseract.js
Privacy
100% Private
Never leaves your device
Everything for password protect pdf in your browser.
Because the file never uploads — 100% client-side WASM processing, zero-server, so sensitive content stays with you.
No — it runs in the tab you already have open, on desktop or mobile.
Free, unlimited, no sign-up, no watermark.
Explore related tools — all private, same instant widget.