ZIP File Locker
Create a password-protected archive with AES-256 encryption.
A small step to start.
Any file type, including ZIP · up to 50 files / 100 MB
Choose your files, set a password, then lock them.
or drop your files here
Your finished files will appear here, ready to download.
How to password-protect files in a ZIP
Create an archive with AES-256 encryption in your browser. Choose a password you can keep safely and use an application that supports AES-encrypted ZIP archives.
- Drop the files you want to protect, including an existing ZIP if needed.
- Enter a password with at least eight characters and select Lock files.
- Download the protected ZIP and test it with your password before sharing it.
Can Klauzi recover a forgotten ZIP password?
No. The password is used locally and is not sent to the studio. Keep a safe copy of the password and your original files.
Does this change the password of an existing ZIP?
No. An existing ZIP is packaged inside a new encrypted archive. To protect the original contents individually, extract an authorized copy first and add those files.
Yours stays yours.
The files and content you choose are processed on your device. These tools do not upload them to a conversion server.
How do I save my result?
Use the download button after processing. On a phone, your browser may show a preview or ask where to save the file.
What if a file does not work?
Check the supported format and size shown in the tool. Large files need more device memory; a smaller file or lower resolution can help.
What should I know about the password?
Keep it safe: it cannot be recovered. Use an AES-compatible app such as 7-Zip, or open the archive in our ZIP Extractor with your password.