Protect PDF
Add password protection to a PDF file.
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Secure PDF services
Use these services when a document needs better sharing controls, less visible metadata, or a more clearly marked copy.
Category pages group related services and learning resources so you can move from one document task to the next without starting over each time.
Services in this category
Choose the service that best matches what you need to do with your file.
Unlock PDF
Remove a PDF password when you know the password.
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Metadata Clean Basic
Remove common visible metadata fields from a PDF.
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Watermark PDF
Apply a text watermark across each PDF page.
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Flatten PDF
Rewrite a PDF into a flatter, easier-to-share output using Ghostscript pdfwrite.
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Sign PDF
Apply a typed signature block to the final page of a PDF.
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Sanitize PDF
Create a cleaner sharing copy by clearing common metadata and rewriting the file structure.
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Guides and articles
Use these pages to understand common mistakes, better workflow order, and related tasks.
How to protect a PDF with a password
Protect a PDF before sharing internal records, personal documents, or sensitive files.