PDF Encryptor
FreeEncrypt PDF files with AES-256 encryption for maximum security
Drop PDF here or click to browse
Add password protection to your PDF
About PDF Encryptor
When a PDF holds anything sensitive, like a contract, payslip, or medical record, leaving it unprotected means anyone who gets the file can open it. Password protection is the simplest way to keep prying eyes out. This encryptor locks your PDF with a password so only people who know it can read the contents.
Upload your file, set a password, and the tool encrypts the document using AES-256, the same strong standard trusted for protecting confidential data. It runs in your browser, is free, and never adds a watermark or requires an account. The file is processed solely to apply the encryption you asked for, so your data is not kept around afterward.
Common uses
- Securing financial statements before emailing them to a client
- Locking personal documents like contracts or ID copies
- Protecting confidential reports shared over the internet
- Adding a password to medical or legal files before storage
How to use
- 1
Upload your file
Click the upload area or drag & drop your file. Supports APPLICATION/PDF. Up to 50 MB.
- 2
Click "Process — PDF Encryptor"
Click the process button. Your file is converted instantly on our secure servers.
- 3
Download your result
Preview and download your converted file. No watermarks, no quality loss, no expiry.
Why ToolHub?
- 100% Free — no account needed
- Works in your browser — no software required
- Instant results
- Secure and private
- No data stored
- Simple to use
FAQ
What happens if I forget the password?
There is no recovery option. AES-256 encryption is strong by design, so a lost password means the file cannot be opened. Store it somewhere safe.
How strong is AES-256 encryption?
AES-256 is a widely trusted standard used to protect sensitive data. With a strong, unique password it is extremely difficult to break.
Will the recipient need this tool to open it?
No, any standard PDF reader will prompt them for the password. They just need the password you set.
Can I use PDF Encryptor on mobile?
Yes — ToolHub is fully responsive and works on iPhone, Android, tablets and all modern browsers. No app install needed.