PDF TOOL COLLECTION
Secure PDF Files Online
Protect authorized documents, remove known passwords, or add visible watermark text before sharing and archiving.
Choose a PDF task
3 published tools
Protect PDF
Add password protection to a PDF copy.
Protect a PDFUnlock PDF
Remove protection using the correct password and authorization.
Unlock a PDFWatermark PDF
Add visible custom text with selectable appearance.
Add a PDF watermarkChoose access protection or visible labeling
Protect PDF adds password access, Unlock removes protection when you know the password, and Watermark adds visible text. These tools serve different purposes and do not replace a qualified digital signature.
Frequently asked questions
Can QuiConvert recover an unknown PDF password?
No. Unlocking requires the correct password and permission to access the document.
Is a watermark the same as password protection?
No. A watermark is visible page content, while password protection controls access to the PDF.
Do these tools create a digital signature?
No. Passwords and visible watermarks do not provide the same function as a qualified digital signature.