100% free tools — no signup, no subscription and private browser processing.
PDF tool · Free online
Protect PDF
Password protect your PDF to restrict access
- ▸ No signup required to download
- ▸ Files removed after processing
- ▸ Works on phone & desktop
Sign in to save results to your account
Select PDF to protect
Drag & drop here, or click to browse
Max 100 MB
How to use Protect PDF
Follow these steps on this page:
- 01. Upload your PDF file
- 02. Configure the options
- 03. Click Process Protect PDF
- 04. Download your protected.pdf
A faster way to protect pdf
Use our free PDF Protect tool to secure your PDF files with password protection instantly. Fast, easy, and 100% online — no installation needed.
Use the uploader above, tweak options if needed, then download. No installers, no watermarks, and nothing locked behind a plan — just the PDF result you need.
Why GoDocLab
Everything you need around Protect PDF
Free, no watermark
Protect PDF stays free — download the finished PDF without branding or a paywall.
Private by default
Transfers use HTTPS. Files are removed after processing so your PDF doesn’t sit on our servers.
Any device
Phone, tablet, or desktop — open the page, upload, and download. Nothing to install.
Built for speed
Skip heavy desktop apps. Most PDF jobs finish in seconds so you can keep working.
FAQ
Questions about Protect PDF
Keep going
More in Security & Sign
Unlock PDF
Remove password protection from a PDF file
🛡️Set Permissions
Set an owner password and restrict printing, editing, or copying content
⬛Redact PDF
Permanently black out sensitive areas on specific PDF pages
🔏Add Stamp
Add a visual approval or e-sign stamp (e.g. APPROVED, DRAFT) to PDF pages
🪪Digital ID
Create a digital identity certificate for PDF document signing
✔️Validate Signature
Check digital signatures and perform revocation checks on a signed PDF