Get the same AES-256 encryption as Adobe Acrobat Pro — for free, in your browser, with no installation.
Part of our Password Protect PDF Free suite
You don't need Adobe Acrobat Pro to password-protect your PDFs. This free browser-based tool offers the same AES-256 encryption and permission controls — no installation, no subscription, no limits. Upload your PDF, set your passwords, configure permissions, and download the encrypted file in seconds. Adobe Acrobat Pro costs over $20 per month ($240+ per year) and requires downloading and installing desktop software. This tool provides identical AES-256 encryption strength, the same dual password system, and the same five permission controls — all for free, instantly accessible from any browser. You don't need to create an account, provide an email address, or install anything. Just open the page and start encrypting. For individuals and small businesses who need occasional PDF encryption, paying for a full Adobe subscription makes no financial sense when the same security is available at no cost.
Select or drag and drop the PDF file you want to protect with a password.
Choose a strong password and configure what actions are allowed — printing, copying, modifying, annotating, and filling forms.
Get your password-protected PDF instantly. Everything runs in your browser — no server uploads.
Get professional PDF encryption without paying for expensive software licenses. Encrypt documents on any computer without per-seat licensing costs.
When you just need to lock one PDF and don't want to install software or sign up for a service. Open the page, encrypt, and you're done.
Encrypt PDFs on public or shared computers where you can't install software. Since it runs in the browser, no installation is needed.
Teams using a mix of Windows, Mac, and Linux can all encrypt PDFs from the same tool without platform-specific software.
Adobe Acrobat Pro costs $20+/month ($240+/year). This tool offers the same AES-256 encryption with identical security strength for free, directly in your browser with no subscription.
Unlike desktop software, there's nothing to download or install. Works on Windows, Mac, Linux, ChromeOS, and mobile devices — any platform with a modern browser.
Both Adobe Acrobat Pro and this tool use AES-256 encryption. The encrypted PDFs are identical in security level and compatible with all the same PDF readers.
All processing happens locally in your browser. Your files never leave your device.
No uploads, no waiting for servers. Instant processing powered by your device.
No limits, no watermarks, no registration required. Free forever.
Encrypt PDF files online with AES-256 encryption. No file uploads to servers. Set passwords and restrict permissions in your browser.
Lock your PDF files with a password so only authorized people can open them. Free, private, and runs entirely in your browser.
Professional PDF encryption tool with AES-256 security. Set user and owner passwords, configure permissions. Browser-based and free.
Secure your PDF documents for free with AES-256 encryption. No signup, no limits, no watermarks. Everything runs in your browser.
Add a password to any PDF file in seconds. Free browser-based tool with AES-256 encryption. No server uploads.
Professional online PDF password protection with AES-256 encryption. Set user and owner passwords, configure permissions. 100% private.
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