This tool is an online JavaScript code formatting, compression, and obfuscation tool that helps developers quickly beautify messy JS code, compress code size to reduce transmission and loading time, or protect code from being easily understood by obfuscating variable names. All operations are performed locally in your browser, and code is never uploaded to any server.

Main Features

• Format/Beautify:Indent, line-break, and align compressed or messy JavaScript code according to standard style, improving code readability.
• Compress:Remove all excess whitespace, line breaks, and comments, shorten code length, reduce file size, and speed up page loading.
• Obfuscate & Compress:On top of compression, replaces identifiers such as variable names and function names with meaningless short names (such as a, b, c), making the code difficult to read and understand, used to protect code logic.
• Syntax Validation:Use the browser\'s native parser to check code syntax and quickly locate error positions.

Difference Between Compression and Obfuscation

• Compress:Only removes whitespace and comments, variable names remain unchanged, code logic is still readable, typically reducing size by 30%-50%.
• Obfuscation:On top of compression, renames variables, making code logic difficult to trace and further reducing size, typically by another 20%-40%.

Main Use Cases

• Read or debug compressed code from third-party libraries.
• Quickly beautify team members\' code style in projects.
• Compress JS code before deployment to reduce network transmission size.
• Obfuscate code before open-sourcing to protect core logic.
• Format code snippets before sharing to improve readability.

Tool Features

• Single-column editing with line numbers: Input and output in the same text box with line numbers on the left, providing an IDE-like editing experience.
• Compression and obfuscation separated: Can compress code alone or further obfuscate variable names.
• Configurable options: Supports practical configurations such as removing console.log and removing debugger statements.
• Configurable indentation: Supports 2 spaces, 4 spaces, and Tab indentation styles.
• Real-time statistics: Displays code line count, character count, and estimated size in real time, making it easy to evaluate compression results.
• Safe and reliable: Pure front-end execution, no data uploaded, absolutely protects your code privacy.