EZPZ FileLock a document so it asks for a password when opened. Neither the file nor the password leaves this browser.
No upload
Drop a PDF here
Pick one file and its page count is read. The file is not sent anywhere.
Drop the file you want to lock.
Type the same password twice. Turn off the permissions if you also want to block printing or copying.
From now on the file needs the password to open.
This is AES-256, so there is no way to recover the contents without the password. That includes us. The password never reaches us, so there is nothing we could do even if we wanted to.
For anything important, write the password down somewhere safe and keep the original file rather than deleting it.
The open password is what someone needs to view the document. For most purposes that alone is enough.
The owner password unlocks printing and editing restrictions. Leave it blank and it matches the open password. Note that permission restrictions are a rule viewers agree to honour, and some programs ignore them. If you need a hard block, use the open password.
No. The encryption engine (qpdf) runs as WebAssembly inside your browser, and the password you type is used there and then discarded.
AES-256, the PDF 2.0 standard, and the strongest of the widely supported options.
Not directly. If the file already has a password, the tool stops and asks you to remove it first. Clear the existing password with Remove PDF password, then set a new one here.
Yes. The first run downloads about a megabyte of encryption engine, so there may be a short wait.
Your e-Aadhaar, bank statement or payslip opens with a password box. Here is where that password comes from, the official e-Aadhaar format, and when it makes sense to lock a PDF of your own.
This is for PDFs you can open with a password you know: an e-Aadhaar, bank statements, payslips and tax forms that ask every time, or a file you locked yourself that now will not merge or upload. If the password is lost, nothing here will open the file, and we say so plainly.