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1. Step-by-Step Protection Guide
Protecting your documents is essential for privacy. Follow these steps to secure your PDF instantly:
Upload Your PDF
Select the document you want to secure. You can use our secure browser-side file picker or drag the file into the tool box.
Enter Secure Password
Choose a strong password. Our engine encrypts the document on your device, meaning your password never touches our servers.
Apply Protection
Click the 'Protect PDF' button. Your file will be instantly locked with military-grade 256-bit AES encryption.
Download Secure File
Once complete, download your newly encrypted PDF. It can now be safely shared or archived.
2. AES 256-Bit Security Explained
FixAPDF utilizes **AES 256-bit encryption**, the gold standard in digital security. This ensures that even if someone unauthorized gets your file, they cannot see the contents without the correct password. It's the same level of security used by government agencies worldwide.
3. Why Local Processing Wins
Most online converters upload your raw PDF to their cloud servers. FixAPDF is different. We process everything **in your browser's memory**. This means your sensitive documents and passwords stay 100% private and never leave your machine.
4. Strong Password Guidelines
A secure document is only as strong as its password. For best results:
- Use Length: Aim for 12+ characters.
- Be Diverse: Mix symbols (@, #), numbers, and capital letters.
- Stay Unique: Avoid using common words or personal names.