How to password Protect PDF
- Select the PDF.
- Type the password twice.
- Choose whether printing, copying and editing are allowed.
- Press Protect PDF and download.
Files worth protecting
Salary slips, Form 16, invoices with bank details and medical reports are worth locking before you send them by email or WhatsApp. Share the password some other way, by phone for example.
Why encrypting on your device matters
Most online tools upload your file in order to encrypt it, so the unprotected file reaches their server first. GreenPDFs encrypts inside your browser and the readable version never leaves your device.
Why your file stays private
Protect PDF runs entirely inside your browser. Your file is read from your device, processed in memory and saved back to your device. It is never uploaded to GreenPDFs or anyone else, so you can use it with Aadhaar, marksheets, bank statements and other personal documents. How in-browser processing works.
Frequently asked questions
Can a forgotten password be recovered?
No. AES-256 can't be bypassed, so keep the password somewhere safe.
How strong is AES-256?
Banks and governments use it. A long password gives the best protection.
Do the no-printing and no-copying settings always work?
Most PDF readers respect them, but the open password is what really protects the file.
Is my file uploaded?
No.