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Home/Categories/Developer Tools

Tool category

Developer Tools

Format and validate JSON, encode or decode Base64 text, generate UUIDs, and convert color values with free online developer tools. Useful browser-based utilities for developers and designers. No signup required.

Developer ToolsJSON Formatter & ValidatorFormat, beautify, validate and minify JSON online. Check syntax, choose indentation and copy or download the result.→
Developer ToolsColor Picker / HEX ConverterPick a color, find its HEX, RGB, HSL, HSV and approximate CMYK values, explore related palettes and check text contrast.→
Developer ToolsBase64 Encoder / DecoderEncode text to Base64 or decode Base64 to readable UTF-8. Supports Unicode text, standard Base64 and Base64URL in your browser.→
Developer ToolsUUID GeneratorGenerate up to 500 random UUID v4 identifiers in your browser. Choose uppercase or lowercase output, remove hyphens, and copy or download your results.→
Developer ToolsURL Encoder / DecoderEncode or decode URLs and URL components online for free. Convert spaces, special characters, and Unicode text instantly using browser-based URL encoding and decoding, with no account or uploads required.→
Developer ToolsHTML FormatterFormat and beautify HTML code online for free. Organize nested tags with 2-space, 4-space, or tab indentation and copy readable HTML instantly. No uploads or signup required.→
Developer ToolsMarkdown to HTML ConverterConvert Markdown to HTML online for free with a live preview. Supports GitHub Flavored Markdown, tables, task lists, and code blocks. Copy or download sanitized HTML directly in your browser.→
Developer ToolsCSS MinifierMinify CSS online for free. Remove unnecessary whitespace, choose whether to keep or remove comments, compare file sizes, and copy or download compact CSS directly in your browser.→
Developer ToolsRegex TesterTest JavaScript regex patterns with highlighted matches, capture groups and replace previews.→
Developer ToolsSQL FormatterFormat SQL queries with readable indentation and supported dialects in your browser.→
Developer ToolsJavaScript MinifierMinify JavaScript locally without mangling variable names or running your code.→
Developer ToolsTimestamp ConverterConvert Unix seconds or milliseconds to dates and back in UTC or browser-local time.→
Developer ToolsCSV to JSONConvert quoted CSV and multiline records to JSON objects or arrays, keeping cell values as strings.→
Developer ToolsJSON to CSVFlatten, reorder and safely export JSON objects or arrays to CSV with configurable columns and delimiter.→
Developer ToolsJWT DecoderDecode a JWT header and payload locally, inspect clock claims and keep token content private.→
Developer ToolsCSV ViewerInspect, search and sort local CSV in a responsive table, then export filtered spreadsheet-safe CSV.→
Developer ToolsMarkdown PreviewerRead a safe live Markdown preview or raw source, with local file opening and text counts.→