JS Formatter & Minifier

Online JavaScript formatting and minification tool, supports ES6+ syntax, one-click beautify/minify JS code, can detect syntax errors.

Daily Usage Quota

Daily Free Usage Exceeded

Used 11 / 10 times today

Log in to get more daily usage, or upgrade to PRO for unlimited access to all tools.

Resets automatically at midnight (00:00), free usage continues the next day.

📖 Instructions

How to Use


  • Paste JavaScript code

  • Choose format or minify mode

  • Set indentation (2 or 4 spaces)

  • Run to get the result
  • ❓ FAQ

    Does it support TypeScript?

    Basic JavaScript and TypeScript formatting is supported; complex TS type syntax may be kept as-is.

    🔗 Related Tools

    📝 Related Articles

    tool-tutorials

    After Being Laid Off by a Big Tech Company, I Took Freelance Jobs and Discovered What Clients Care About Most Is Actually Code Formatting

    After being laid off by a big tech company, I took freelance jobs. I thought strong technical skills would be enough, but the first client complained that the code was too messy to understand. It turns out that in clients' eyes, compressed and obfuscated code looks like gibberish, while neatly formatted code represents professionalism and reliability. This article shares that experience and discusses why code readability matters more than showing off technical prowess, and how a small formatting tool helped me win clients' trust.

    tool-tutorials

    AI Code Generation Is Getting Stronger, But JS Formatting Still Relies on These Tools

    AI code generation is getting stronger and stronger, but the formatting and compression of JS code still can't do without dedicated tools. Whether it's reading compressed legacy code or unifying the chaotic style generated by AI, a good formatting tool can intelligently recognize structure and handle line breaks and indentation according to standards, while compression tools can perform dead code elimination and constant folding. This article discusses the practical use cases and selection points of these tools.

    tool-tutorials

    Changed a JS compression config, online errors dropped by 80%

    Frequent JS errors online? Don't rush to blame the logic; 80% of the time it's the compression config causing trouble. This article uses real cases to show you how the compressor's default "smart" settings can ruin old projects, from mis-deleting conditional branches to messing up variable names. Step-by-step, I'll teach you to turn off a few key optimization options, cutting error rates by 80% while only increasing code size by 15%, in exchange for stable operation—totally worth it.

    tool-tutorials

    The Day ChatGPT Code Crashed, I Learned This JS Formatting Trick

    Using ChatGPT to modify code crashed seven or eight times in a row—blank pages, unresponsive buttons, misused functions—almost delaying the client's launch. Finally, with an unassuming JS formatting tool, I formatted the AI-generated messy code with one click, instantly spotting the misplaced loop bracket and variable name inconsistency. This article shares that real experience and summarizes a new workflow: AI-generated code must be checked with a formatting tool, preserving AI's efficiency while avoiding its pitfalls.

    Previous

    IP Address Lookup Tool