Password Protect PDF
Secure your PDF document offline in your browser with strong 128-bit encryption password protection.
Drag & drop a PDF to protect
or browse your files
Single PDF file up to 100MB
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Secure Local PDF Password Protection
Private Local Encryption
Encrypt files directly on your CPU. No files or passwords are ever transmitted to any external server, eliminating data leak vulnerabilities.
Strong Document Locking
Apply strong standard PDF encryption. Once locked, only users with the correct password can view, edit, or copy the content.
Instant Results
Protect your documents immediately. The locked PDF is generated inside your browser and downloaded instantly without upload delays.
Frequently Asked Questions
How secure is PDFCraft's password protection?
We use standard PDF encryption to lock your documents. Since the encryption process runs entirely in your browser sandbox, your password and document are completely safe from interceptors.
Will my PDF password be saved by PDFCraft?
No. PDFCraft operates entirely client-side. We do not store, track, or log your passwords or files. Once you close the tab, all session details are permanently gone.
Will the password-protected PDF work in standard viewers?
Yes. The output is a standard encrypted PDF. It will prompt for the password when opened in Adobe Acrobat, Google Chrome, Apple Preview, or any other PDF reader.
Can I password protect PDFs offline?
Yes. After installing PDFCraft as a PWA, you can encrypt your sensitive documents offline, keeping them safe on your local drive.