PDF Security – Protect Your PDF Files Online for Free

Keep your documents safe with our PDF Security tool. Whether you’re sharing business contracts, financial reports, legal documents, or personal files, protecting sensitive information is essential. Our free online PDF security solution helps you secure your PDFs quickly without installing any software or creating an account.
With this tool, you can encrypt PDF files using a strong password to prevent unauthorized access and keep confidential information private. If you need to access a protected document that you own, you can also decrypt PDF files by removing password protection with the correct authorization. For additional document protection, you can add a watermark to display your brand, copyright notice, or confidential label. If necessary, our tool also allows you to remove watermarks from authorized documents while preserving the original quality.
Need to protect sensitive information before sharing? Use the Redact PDF feature to permanently remove confidential text, personal data, or private information. You can also remove JavaScript embedded in PDF files to improve document security and reduce potential risks when opening files.
Our PDF Security tool works directly in your web browser on Windows, macOS, Linux, Android, and iPhone. Files are transferred over secure connections and automatically deleted after processing to protect your privacy. Upload your PDF, choose the required security option, and download a protected, high-quality document in just a few clicks—fast, secure, and completely free.