Free online developer tools that work entirely in your browser. No data is sent to any server - all processing happens locally.
Format and validate JSON data with syntax highlighting and error detection. Perfect for developers who need to work with JSON data.
Use ToolDecode and format JWT tokens to view header, payload, and signature information.
Use ToolEncode and decode URL strings to handle special characters and ensure proper URL formatting.
Use ToolGenerate UUIDs (Universally Unique Identifiers) instantly. Support for UUID v4 format.
Use ToolGenerate secure, random passwords with customizable length and character options.
Use ToolConvert text between different case formats: uppercase, lowercase, camelCase, PascalCase, kebab-case, snake_case, and more.
Use ToolConvert Unix timestamps to human-readable dates and vice versa. Support for multiple date formats and timezones.
Use ToolGenerate Lorem Ipsum placeholder text for your designs and mockups. Customize paragraphs, words, and sentences.
Use ToolEncode and decode HTML entities. Convert special characters to HTML entities and vice versa.
Use ToolConvert colors between HEX, RGB, HSL formats. Pick colors and get instant conversions with color preview.
Use ToolTest and debug regular expressions online. Match patterns against text and see results in real-time.
Use ToolMinify and beautify CSS code. Reduce file size and improve readability with proper formatting.
Use ToolEdit and preview Markdown text in real-time. Convert Markdown to HTML and see live preview.
Use ToolMinify and beautify JavaScript code. Reduce file size and improve readability with proper formatting.
Use ToolConvert JSON data to CSV format. Transform JSON arrays and objects into comma-separated values.
Use ToolConvert JSON data to Excel XLSX format. Transform JSON arrays and objects into Excel spreadsheets.
Use ToolFormat and validate XML data with syntax highlighting, indentation, and error detection.
Use ToolFormat and beautify SQL queries with proper indentation, keyword highlighting, and readability improvements.
Use ToolGenerate QR codes from text, URLs, or other data. Customize size, error correction level, and download as image.
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