Beautify, Minify & AI Explain Code — Free Online
Format messy JS/CSS/HTML, compress to one line for production, or paste any code (Python, Go, SQL, Bash) and get a plain-English AI explanation. Free, no login.
About This Tool
Beautify, Minify, or Explain — Three Tools in One
Beautify restores proper indentation to messy or minified code. Minify compresses to one line for production. Explain sends any code snippet — JS, TS, Python, Go, SQL, Bash — to AI and returns a plain-English breakdown: purpose, step-by-step, inputs, outputs.
Beautify and Minify use js-beautify locally — the same library VS Code uses. Your code never leaves your device. Explain mode sends your snippet to Google Gemma for the breakdown — disclosure is shown when the mode is active.
Beautify Mode
Restore readable indentation and line breaks from any minified or messy code.
Minify Mode
Compress JS, CSS, or HTML to one line — strips whitespace and comments.
AI Explain
Paste any code — any language — and AI explains it in plain English with inputs/outputs.
Any Language
Explain works for JS, TS, Python, Go, Java, Rust, SQL, Bash, and more.
2 or 4 Spaces
Choose your team's preferred indent size in Beautify mode.
Local by Default
Beautify and Minify run in your browser. Only Explain uses AI.
Quick Start
How to Beautify, Minify, or Explain Code
Pick a Mode
Beautify (format), Minify (compress), or Explain (AI plain-English breakdown).
Paste Code
Any language for Explain. HTML, CSS, or JS for Beautify and Minify.
Click the Action
Beautify and Minify are instant. Explain takes a few seconds via AI.
Read or Copy
Copy formatted output, or read the AI breakdown (purpose + steps).
FAQ
Frequently Asked Questions
Yes. Switch to Explain mode (sparkle tab), paste any code snippet up to 5,000 characters, and click Explain. AI auto-detects the language (JS, Python, Go, SQL, Bash, etc.) and returns a plain-English breakdown: purpose, step-by-step bullets, inputs, and outputs. Useful for unfamiliar code, legacy code review, and learning.
Any common programming or markup language: JavaScript, TypeScript, Python, Go, Java, C, C++, Rust, Ruby, PHP, SQL, Bash, HTML, CSS, YAML, and more. AI detects the language from the code itself — no manual selection needed.
Yes — only in Explain mode. The snippet is sent to Google Gemma for the breakdown. Beautify and Minify run entirely in your browser. Don't paste secrets, API keys, or proprietary code into Explain mode. The disclosure appears at the top of the Explain tab.
Paste your JavaScript, click the Minify tab, then click Minify. The output is compressed to a single line — whitespace and comments removed, ready for production. The char reduction % is shown below the output. Local-only, no upload.
Yes. Switch to the CSS or HTML tab, switch to Minify mode, and click Minify. All whitespace and comments are stripped, reducing file size for faster page load.
Rewrites minified or messy code with proper indentation, line breaks, and spacing — making it readable and maintainable. Pick HTML, CSS, or JavaScript tab and choose 2 or 4 space indent.
No. Local modes only add or strip formatting. They don't change code logic or fix syntax errors. AI Explain, however, will tell you in plain English if a snippet looks incomplete or unusual.
Yes — completely free, no signup, no login. Beautify and Minify run entirely in your browser using js-beautify. Explain mode is also free but does require an internet connection to call AI.