Developer Tools
JSON formatter, Base64, hashes, UUIDs, regex tester, minifiers, color and CSS generators for developers and designers.
JSON Formatter & ValidatorFormat, beautify, validate and minify JSON with clear error messages and a collapsible tree view.
Base64 Encode / DecodeEncode text or files to Base64 and decode Base64 back to text. Supports UTF-8 and URL-safe Base64.
URL Encode / DecodeEncode or decode URLs and query strings, and break a URL into its parts and parameters.
HTML Encoder / DecoderEscape special characters to HTML entities and decode entities back into plain text.
UUID GeneratorGenerate random UUID v4 (GUID) values in bulk, with uppercase, braces and no-hyphen options.
Hash GeneratorGenerate MD5, SHA-1, SHA-256, SHA-384 and SHA-512 hashes from text or files, and verify checksums.
JWT DecoderDecode JSON Web Tokens to read the header, payload, issued and expiry times. Runs locally — tokens are never sent anywhere.
Regex TesterTest JavaScript regular expressions with live match highlighting, capture groups and a replace preview.
Color Picker & ConverterPick a color and convert between HEX, RGB, HSL and CMYK. See tints, shades and WCAG contrast ratio.
Color Palette GeneratorGenerate beautiful color palettes — complementary, analogous, triadic, monochrome or random — and copy the codes.
CSS Gradient GeneratorCreate linear and radial CSS gradients with multiple color stops and copy the CSS code.
CSS Box Shadow GeneratorDesign CSS box shadows visually with offset, blur, spread, color and inset, then copy the code.
HTML / CSS / JS MinifierMinify CSS, JavaScript and HTML to reduce file size and speed up your website.
Unix Timestamp ConverterConvert Unix epoch timestamps to human dates and dates back to timestamps, in seconds or milliseconds.
Markdown to HTMLConvert Markdown to clean HTML with a live preview. Supports tables, code blocks and GitHub-flavored Markdown.
CSV to JSON ConverterConvert CSV to JSON and JSON to CSV. Handles quoted fields, custom delimiters and header rows.
Number Base ConverterConvert numbers between binary, octal, decimal and hexadecimal — or any base from 2 to 36.
SQL FormatterFormat and beautify SQL queries for MySQL, PostgreSQL, SQL Server and more, with keyword case options.