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Encrypt & Protect PDFs

Add a password and real usage restrictions (no print, no copy, no edit) to any PDF. Choose between a standard password PDF that opens in any reader or an AES-256 envelope for maximum confidentiality.

Try it now — your file stays on your device

Encrypt & Protect PDF

Lock your PDF with a password and apply usage restrictions. Everything happens locally in your browser.

How protection works

Password. Mathematically prevents anyone without the password from reading the file.
Restrictions. Tell PDF readers what viewers may do (print, copy, edit) once the file is open.
Encrypt & Protect PDF
Lock your PDF with a password and apply usage restrictions. Everything happens locally in your browser.

Required to open the file. Anyone without it cannot view the PDF.

Restrict printing
Restrict text and image copying
Restrict editing and annotation

Honored by Adobe Acrobat, Preview, and major browsers. These are advisory protections, not absolute — a determined attacker can strip them with specialised tools.

Output preview
PDF=*-protected.pdf

Key Features

Standard PDF Password

Output a regular .pdf file that prompts for a password in Acrobat, Preview, Chrome, or any other reader.

AES-256 Envelope

Wrap the PDF in a Web Crypto envelope for the highest possible secrecy in transit. Re-open here to restore.

Real Permission Locks

Restrict printing, copying, and editing — enforced inside the PDF itself with a tamper-resistant owner secret.

Zero-Knowledge

Your password is processed only by your browser via the native Web Crypto API. We never see it.

Fully Local

No upload, no server processing. Encryption happens on your device and the file is downloaded directly.

Unlock Any Protected PDF

Upload a password-protected PDF or our .pdf.enc envelope — the tool auto-detects and removes the lock.

How It Works

1

Upload Your PDF

Drag and drop the PDF you want to protect. It stays in your browser the entire time.

2

Choose Encryption Method

Pick standard PDF password (universal compatibility) or AES envelope (maximum secrecy in transit).

3

Set Password & Restrictions

Add a password and toggle which actions readers may perform: print, copy, or edit.

4

Encrypt & Download

Click Protect PDF. Your file is encrypted and saved locally. Keep your password safe!

Why Choose EditPDF

AES-256 encryption (Standard PDF: V5/R5; Envelope: AES-256-GCM)
Real print, copy, and edit restrictions burned into the PDF
Optional standard mode opens in Acrobat, Preview, Chrome, Firefox
PBKDF2-SHA-256 with 250,000 iterations for envelope mode
Zero-knowledge: password and key derivation happen only in your browser
Free with no file size limits, no registration

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