PDF Protect & Unlock
$4.99 day pass · or $9.99/moLock a PDF with 256-bit AES encryption, or remove a password from a protected file when you know it. Everything runs on your device — your password never leaves the browser.
How to use PDF Protect & Unlock — step by step
- 1Open the tool you want. Done — this page is saved in your browser, so it opens with no connection.
- 2Turn on airplane mode (optional).Anyone can claim a tool is private. Airplane mode is what proves it — with the connection off, there's nowhere for your file to go. Skip it and everything still works, but you won't have the added privacy protection of a 100% internet disconnect.Press the airplane-mode button on your own phone, tablet or laptop.The switch is on your device, not on this page. On some laptops and phones the airplane button leaves Wi-Fi or Bluetooth running — if the instrument still shows a connection, turn those off yourself. It reads Offline the moment the connection is really gone.
- 3Add your PDF.
- 4Choose to lock it with a password, or unlock it by entering the password you already know.
- 5Tap apply.
- 6Download the updated file.
Adds 256-bit AES encryption. The PDF can't be opened without the password. Everything runs on your device — your password never leaves the browser.
About PDF Protect & Unlock
PDF Protect & Unlock is a browser-based online document tool from Relavancy. Lock a PDF with 256-bit AES encryption, or remove a password from a protected file when you know it. Everything runs on your device — your password never leaves the browser. Unlike most web-based tools that upload your files to a remote server, PDF Protect & Unlock runs entirely in your browser — your documents, photos, and text never leave your device. It works on iPhone and Android as well as desktop, with no app to install and no account to create.
Why use PDF Protect & Unlock?
- 256-bit AES — add or remove a pdf password.
- 100% private: your files are processed in your browser and never uploaded to a server.
- No login, no account, no watermarks on your output.
- Works on iPhone, Android, Mac, and Windows — any modern browser, no install.
- Included with a $4.99 day pass or $9.99/month plan — try the free tools first to feel the quality.
- Instant output you can download or copy in one tap.
Common uses for PDF Protect & Unlock
- Prepare files for email, printing, or cloud storage without size or privacy worries.
- Tidy up scanned paperwork before archiving or sharing with clients.
- Anyone who needs pdf protect & unlock without installing software or creating an account.
Is PDF Protect & Unlock right for you?
- Works best with PDFs under 200 pages. Very large files may be slow or freeze on older phones — use a desktop for big documents.
- Can only remove a password if you already know it — this tool cannot crack or recover forgotten passwords.
- Runs entirely in your browser — nothing is saved between visits, so download your result before closing the tab.
- Your day pass or subscription unlocks this tool across all your devices, but your processed files are never stored — each session starts fresh.
Frequently asked questions
- Is the PDF protect tool free?
- It's included with a $4.99 day pass or $9.99/month plan. Eight tools are free with no signup: QR Code Generator, QR Code Scanner, Image Compressor, Read Aloud, PDF to Word, Word to PDF, PDF Merge, and PDF Compress.
- Is my password sent to a server?
- No. Encryption and decryption happen entirely in your browser. Neither your PDF nor your password ever leaves your device.
- Can I remove a password from a PDF I forgot?
- No. You can only remove a password when you already know it — this tool can't crack protected files.
Pricing & privacy
PDF Protect & Unlock is part of Relavancy's suite of 38 browser utilities. Eight tools — QR Code Generator, QR Code Scanner, Image Compressor, Read Aloud, PDF to Word, Word to PDF, PDF Merge, and PDF Compress — are free with no signup. Every other tool is included with a $4.99 day pass or $9.99/month plan. Because processing happens locally in your browser, your files are never uploaded to a server, making PDF Protect & Unlock a private, secure choice for sensitive documents.