Free online tool by DocsBolt
Lock PDF with Password
Add a password to a PDF before sharing files that need an extra privacy layer.
Lock PDF with a password free online using DocsBolt. Add password protection to any PDF file before sharing for extra privacy — no signup, instant results.
What this tool includes
Output
Password-Protected PDF
Accepts: .pdf
Lock PDF
Upload your file, choose any optional settings, and download the result.
Workflow
Upload your PDF
Choose the document to protect.
Set the password
Enter the password for the new locked file.
Download the protected PDF
Share the file along with the password separately.
FAQ
Can I lock a PDF that is already protected?
Yes, if you know the current password. Enter it as the current password and set a new one.
Should I share the password in the same place as the PDF?
No. For better security, share the password separately.
More PDF tools
Explore more DocsBolt PDF tools.
PDF to Word
Convert PDF to Word free online with DocsBolt. Transform any PDF into an editable DOCX document in seconds — no signup, no watermark, instant download.
PDF to PPT
Convert PDF to PowerPoint free online with DocsBolt. Turn any PDF into editable PPT slides in seconds — no login required, no watermark, instant download.
PDF to Excel
Convert PDF to Excel free online with DocsBolt. Extract text from any PDF into an editable spreadsheet for sorting and analysis — no signup, instant download.
PDF to JPG
Convert PDF to JPG free online with DocsBolt. Export each PDF page as a high-quality JPG image for previews, uploads, and quick sharing — no login needed.
PDF to PNG
Convert PDF to PNG free online with DocsBolt. Export each PDF page as a crisp, high-quality PNG image for design, annotation, and uploads — instant download.
Word to PDF
Convert Word to PDF free online with DocsBolt. Transform any DOCX file into a clean, shareable PDF document in seconds — no login required, 100% free.