Free Online Code Utilities
Free online code formatting and utility tools. Beautify, minify, and compare JavaScript, CSS, HTML, and more.
6 tools available
JavaScript 美化/壓縮
格式化或壓縮 JavaScript
CSS 美化與壓縮工具
格式化、優化和壓縮 CSS 代碼
HTML 美化/壓縮
格式化或壓縮 HTML
代碼差異檢查器
並排比較代碼/文字
Markdown 編輯器與預覽器
即時 Markdown 編輯器與預覽
XML → Java 類別轉換器
將 XML 轉換為帶有 JAXB 和 Lombok 支援的 Java 註解類別
Related Use Cases
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About Free Online Code Utilities
Free online code formatting and utility tools. Beautify, minify, and compare JavaScript, CSS, HTML, and more. All tools are 100% free, work entirely in your browser for maximum privacy, and require no installation or sign-up. Whether you're debugging, converting data formats, or generating code, our free online code utilities help you work faster and smarter.
Why Choose Our Tools?
- Privacy-First: All processing happens in your browser — no data leaves your device.
- Instant Results: Client-side processing means zero server delays.
- No Sign-Up: Start using any tool immediately, no registration required.
- Multilingual: Available in 10 languages for developers worldwide.