Download CyberChef

CyberChef is a free, open-source web-based tool from GCHQ dubbed the “Cyber Swiss Army Knife” — a powerful application for performing a wide range of data encoding, decoding, encryption, compression, and analysis operations directly in your browser. It requires no installation and works entirely offline once loaded.

With over 300 operations available, CyberChef lets you chain multiple data transformations together using a simple drag-and-drop recipe builder. Convert between Base64, hex, and binary; encrypt and decrypt with AES, RSA, or DES; parse JSON, XML, and CSV; extract IP addresses from text; generate hashes — and hundreds more operations, all without writing a single line of code.

Used by security researchers, CTF competitors, developers, and data analysts worldwide, CyberChef makes complex data manipulation tasks accessible to anyone through its intuitive visual interface.

Key Features

• 300+ data operations including encoding, encryption, compression, and parsing
• Drag-and-drop recipe builder to chain multiple operations in sequence
• Works entirely in the browser — no data sent to any server
• Supports Base64, hex, binary, URL encoding, and dozens more formats
• Encryption and decryption with AES, DES, RSA, Blowfish, and more
• Hash generation: MD5, SHA-1, SHA-256, SHA-512, and others
• Save and share recipes as URLs for reproducible data workflows

How to Install

1. Click the download button above to get the CyberChef package.
2. Extract the ZIP file to any folder on your computer.
3. Open the CyberChef.html file in any modern web browser.
4. CyberChef runs entirely offline — no internet connection needed after loading.
5. Drag operations from the left panel to build your recipe and start processing data.