Add PDF password lock for free
Add PDF password protection with the Adobe Acrobat online tool for free. By adding a password to your PDF file, you can limit access and only allow people with the password to view the file content.
Follow these steps on how to password-protect your PDF files online for free:
Add PDF password protection with the Adobe Acrobat online tool for free. By adding a password to your PDF file, you can limit access and only allow people with the password to view the file content.
By password-protecting a document, you can make sure that sensitive data like birth dates or medical information is accessible only to approved people and remains unavailable to everyone else.
When you password protect a PDF, you control file access. For someone to open the file, you'll need to give them the password, keeping your content private and safe.
At Adobe, we take security protocols very seriously. To ensure your file is well protected, we’ll let you know if your password is weak, medium or strong.
Our compatible Acrobat online PDF tools work in any browser, including Microsoft Edge and Google Chrome. Just drag and drop a file to get started — there’s no need to install any additional software.
As the inventor of the PDF file format, Adobe delivers document security you can rely on. Password-protect your PDFs with confidence and try our services today.
Safeguard your private financial and business reports using Adobe Acrobat's password protection tool. You can prevent unwanted access and practice data privacy by creating a strong password of your PDF bank statements, invoices, and more.
You can protect your personal information, like tax forms, medical records, and Aadhaar cards, by utilising robust encryption features. The password protection feature offers a dependable method of safeguarding your most confidential documents.
Restrict access to legal documents. Make a file password protected by following the steps above.
When you protect documents with a password, people who enter the correct password can access the file or folder. A stronger security method is encryption, with common types being 128-bit key or 256-bit AES encryption. Encryption turns document content into unreadable cipher text. To decrypt the document, authorised users need a key, which is typically a password or a digital certificate.
When you use the Acrobat online tool to add password protection to a PDF file, it encrypts the file for added security. If you need more advanced PDF security, you can try Adobe Acrobat Pro for free for seven days for Mac or Windows. The seven-day free trial lets you add encryption options, encrypt PDFs with certificates or manage security settings and permissions to restrict editing, printing or copying. Acrobat Pro also lets you edit PDFs, organise PDF pages and convert PDFs to and from Microsoft Office apps, including Microsoft Word documents, PowerPoint presentations and Excel spreadsheets.