Put a password on a PDF — or remove one
Real encryption, not a viewer trick: without the password the file is unreadable data. And because it runs in this tab, the password is never typed into someone else’s server.
- Runs entirely in your browser
- Works offline
- No upload
- No sign-up
- No watermark
Loading the tool…
How it works
- Drop one or more PDFs.
- Choose the action — “Add a password (AES-256)” or “Remove a password I know” — and type the password. When protecting, decide whether printing and copying stay allowed.
- Process and download the encrypted or unlocked files.
Why nothing is uploaded
Every operation on this page is done by code running inside your browser tab, using the same engine that renders web pages. The file is read from disk into your tab’s memory, transformed there, and written back out as a download. It is never sent anywhere — not to us, not to a third party.
Verify it yourself
- Open your browser’s developer tools (F12) and select the Network tab.
- Load your file and run the tool.
- The only requests you will see fetch the tool’s own code — and, for a few heavy tools, their open-source engine from a public CDN — plus one small page-view ping to loreatec.jp (page address and title, nothing more). None of them carry your file.
Frequently asked questions
How strong is this protection?
AES-256, the same encryption standard used for classified material. With a decent passphrase, the content is not recoverable without it. With “1234”, the encryption is perfect and the password is the hole — length matters more than symbols.
Can you remove a password I do not know?
No, and deliberately so. Removing protection without the password is called breaking it, and a tool that does that for any file that lands here would be indefensible. With the password, unlocking is one click.
Are the printing and copying restrictions absolute?
No. Permissions are enforced by PDF readers voluntarily. Good readers respect them; determined people with the open password can get around them. The password to OPEN the file is the real protection; the permissions are a polite fence.
Why does doing this in the browser matter?
Because the alternative is typing a password and uploading a confidential file to a website you know nothing about. Here the encryption engine — a standard open-source PDF tool — runs inside this tab, and you can cut the internet before using it.