Add Password
Protect your PDFs with a password
Drop your PDF here or click to browse
Supports PDF files up to 100MB
Protect sensitive documents with ConvertedPDF's free PDF password tool. Add passwords to prevent unauthorized access, and set permissions to control what recipients can do with your documents—all without uploading files to any server.
Whether you're securing financial reports, confidential contracts, or personal documents, our encryption tool ensures only authorized people can view your content. Choose between owner passwords (for permissions) and open passwords (for viewing) for complete control.
Why Use Our Add Password to PDF Online for Free?
Who Uses This Tool?
Trusted by professionals across industries for their daily document needs
Financial Documents
Protect financial statements and tax returns. Secure investment reports. Encrypt banking documents.
Legal Contracts
Secure confidential agreements. Protect sensitive case files. Encrypt client communications.
Healthcare Records
Protect patient information for HIPAA compliance. Secure medical records. Encrypt health insurance documents.
HR Documents
Protect employee records and payroll. Secure performance reviews. Encrypt personnel files.
Intellectual Property
Protect product designs and patents. Secure trade secrets. Encrypt research documents.
Personal Documents
Secure personal identification documents. Protect family records. Encrypt private correspondence.
How It Works
Get started in three simple steps
Upload Your PDF
Drag and drop your PDF or click to browse. Your file stays on your device.
Set Password & Permissions
Enter a password and choose what actions to allow (print, copy, edit).
Protect & Download
Click Protect and download your encrypted PDF. Share the password securely.
Powerful Features
Everything you need, nothing you don't
Strong Encryption
AES 256-bit encryption, the same standard used by banks and governments.
Dual Password System
Set separate passwords for opening and for owner permissions.
Permission Controls
Allow or restrict printing, copying text, editing, and form filling.
Print Quality Control
Allow high-quality or low-quality printing, or disable printing entirely.
Batch Protection
Apply the same password and permissions to multiple PDFs at once.
Compatibility
Protected PDFs work with all standard PDF readers.
Frequently Asked Questions
Quick answers to common questions
What's the difference between open and owner passwords?
Open password is required to view the PDF. Owner password allows changing permissions and removing protection. You can set one or both.
How secure is the encryption?
We use AES 256-bit encryption, which is virtually unbreakable. It's the same standard used for top-secret government documents.
Can someone bypass the password?
Strong passwords cannot be easily bypassed. However, weak passwords can be vulnerable to brute force attacks. Use complex passwords.
Will recipients need special software?
No, any standard PDF reader (Adobe, Preview, browsers) can open password-protected PDFs.
Can I remove the password later?
Yes, use our "Remove Password" tool with the owner password to remove protection.
Is there a limit on file size?
Free users can protect files up to 10MB. Premium users can handle files up to 100MB.
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