⌨
Developer Tools
Free online utilities for developers: format, validate, and minify JSON, XML, and HTML instantly. Fast, private, and runs entirely in your browser.
JSON Formatter
Format, validate, and minify JSON with syntax highlighting-ready output.
Open toolJSON Validator
Validate JSON syntax and get clear error messages.
Open toolJSON Minifier
Compress JSON by removing whitespace and line breaks.
Open toolXML Formatter
Beautify and minify XML with proper indentation.
Open toolXML Validator
Check if XML is well-formed and get error details.
Open toolHTML Formatter
Beautify HTML with clean indentation and structure.
Open toolBase64 Encoder / Decoder
Encode text to Base64 or decode Base64 back to plain text.
Open toolURL Encoder / Decoder
Encode or decode URL components and query strings safely.
Open toolUUID Generator
Generate random UUID v4 identifiers instantly.
Open toolHash Generator
Generate SHA-1, SHA-256, and SHA-512 hashes from text.
Open toolPassword Generator
Generate strong random passwords with custom length and character sets.
Open toolMarkdown ↔ HTML Converter
Convert Markdown to HTML or HTML back to Markdown instantly in your browser.
Open toolRegex Tester
Test regular expressions against sample text with live match highlighting.
Open toolJWT Decoder
Decode JSON Web Tokens and inspect header and payload claims.
Open toolTimestamp Converter
Convert Unix timestamps to human dates and back. Supports seconds and milliseconds.
Open toolMD5 Generator
Generate MD5 hashes from text. Fast checksum for files and strings.
Open toolCSV ↔ JSON Converter
Convert CSV data to JSON arrays or JSON back to CSV instantly.
Open toolMeta Tag Generator
Generate HTML meta tags, Open Graph, and Twitter Card markup for SEO.
Open toolYAML ↔ JSON Converter
Convert YAML to JSON or JSON to YAML for configs, CI/CD, and APIs.
Open toolColor Converter
Convert colors between HEX, RGB, and HSL with a live preview swatch.
Open toolUTM Link Builder
Build campaign URLs with UTM source, medium, campaign, term, and content tags.
Open toolCron Expression Generator
Build cron schedules visually and copy a valid five-field cron expression.
Open toolJSON to TypeScript
Convert JSON to TypeScript interfaces or types instantly in your browser.
Open toolCSS Formatter
Beautify and format CSS with proper indentation. Minify CSS in one click.
Open toolOpen Graph Preview
Preview how your link looks on Facebook, LinkedIn, and Twitter before you share.
Open tool