Password protect a PDF
Protect your PDF files with a password.
Accepted source formats
Available output formats
How it works
Load the PDF to protect
Set a secure password
Download the protected PDF
Common mistakes
- Using a source file of poor quality.
- Publishing without checking the final result.
- Confusing file size, dimensions and quality.
- Overwriting the original file without keeping a copy.
Pro tips
- Always keep an original version.
- Test several settings before downloading.
- Use WebP for the web when possible.
- Choose descriptive file names for SEO.
Privacy and file handling
File handling depends on the selected tool and format. For sensitive files, review the tool information before starting the operation.
Protect PDF with password for free
Secure your PDF documents with a strong password, free and without signup. Our tool lets you add password protection in seconds, preventing unauthorized access to your file. Secure your confidential PDFs with a strong password and AES encryption. Add restrictions on printing, copying or editing based on the desired permissions.
Bank-grade AES 256-bit encryption
Your PDF is protected with AES 256-bit encryption, the same security standard used by banks, governments, and military organizations. This level of protection ensures your document cannot be decrypted without the correct password. A quick check can prevent problems later. Always check the output file before sharing it.
Restrict printing, copying, and editing
Beyond the open password, set restrictions on what users can do with your PDF: prohibit printing, block text copying, prevent modifications. Keep complete control over how your documents are used. Keep the original until you have approved the result. A quick check can prevent problems later.
PDF protection without software installation
Protect your PDFs directly in your browser, without downloading or installing any software. Our tool works on Windows, Mac, Linux, tablets, and smartphones. Add a password to your PDF easily, wherever you are. A quick check can prevent problems later. Always check the output file before sharing it.
Local and confidential protection
Your PDF protection happens entirely in your browser. This approach guarantees absolute confidentiality: only you know the content and encryption key. Finally, test the file in the app or service where it will be used and keep the original until the finished version has been fully reviewed.
Discover all our PDF tools
Compress, merge, convert, edit and protect your documents in a few clicks.
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Guides and tutorials
Learn how to use our tools with our detailed guides.