Developer Tools
XML Formatter & Validator
Format, prettify, and validate XML online. Instantly beautify XML with proper indentation. Free online XML formatter.
Input
Result
Formatted XML will appear here.
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Calculate Unix file permissions visually. Click checkboxes to set read/write/execute for owner, group, and others. Shows octal and symbolic notation.
CSS Specificity Calculator
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CSS Unit Converter
Convert between CSS units: px, rem, em, pt, vw, vh. Set custom base font size and viewport width.