ZIP File Encryptor
Build a Password-Protected Archive
Need to use ZIP File Encryptor right now?
The password and files never leave your device during encryption.
Add files to protect
Processed locally in your browser — never uploaded
Encrypts with AES-256, ZIP's strongest standard encryption — a real 7-Zip build compiled to WebAssembly does the encryption entirely in your browser. Remember the password: it can't be recovered if lost.
Features
- Runs entirely in your browser
- Privacy-first — your data is never uploaded
- Real-time, instant results
- 100% free, no sign-up required
- Works on desktop, tablet, and mobile
- No installation needed
Who uses this tool?
About ZIP File Encryptor
Sharing sensitive files sometimes calls for genuine encryption, not just an informal agreement not to peek. This tool bundles your files into a ZIP archive protected with AES-256 — ZIP's strongest standard encryption method — using a real 7-Zip build compiled to WebAssembly to perform the actual encryption.
AES-256 is a modern, cryptographically strong encryption standard, meaningfully stronger than the older, legacy ZipCrypto method many casual ZIP tools default to (which has known weaknesses). Choosing AES-256 specifically is a deliberate security choice this tool makes on your behalf.
The resulting ZIP requires the password you set to open in any ZIP-compatible software that supports AES encryption — most modern archive tools (7-Zip, WinRAR, macOS Archive Utility with the right settings) handle this correctly, though some very old or basic tools may only support the legacy method.
Everything happens locally: your files and the password you choose are never transmitted anywhere — encryption happens entirely inside your browser's WebAssembly sandbox.
How it works
- Add your files. Select the files to include in the protected archive.
- Set a password. Choose a password to encrypt the archive with.
- Download the protected ZIP. An AES-256 encrypted archive, ready to share securely.
Examples
Sharing sensitive files securely
Input
3 files + a chosen password
Output
protected.zip, requiring the password to open