Developer tools

JSON, encoding, URLs, regex and colours.

• Base64 Encoder / Decoder — Encode text to Base64 or decode it back. UTF-8 safe, including Hindi.
• Code Formatter — Beautify HTML, CSS, SCSS, JavaScript, TypeScript, JSON, Markdown, YAML, GraphQL and SQL.
• Color Converter — Convert colours between HEX, RGB, HSL and check contrast ratio.
• HTML Entity Encoder / Decoder — Escape characters as HTML entities, or decode entities back to text.
• HTTP Header Parser — Tidy raw HTTP headers, export them as JSON and check common security headers.
• JSON Formatter & Validator — Format, validate and minify JSON, with the exact position of syntax errors.
• JWT Decoder — Decode the header and payload of a JSON Web Token and show its expiry.
• Regex Tester — Test JavaScript regular expressions with live match highlighting and groups.
• URL & Query String Parser — Break a URL into its parts and edit query parameters. Includes a UTM builder.
• URL Encoder / Decoder — Percent-encode or decode text for use in URLs.
• XML Formatter & Validator — Check XML is well-formed, then pretty-print or minify it.
• YAML Formatter & Converter — Validate and format YAML, and convert between YAML and JSON.
• User-Agent Info — See your browser’s user agent and client hints, or parse any user-agent string.