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Free online developer tools tools
Format and validate JSON with customizable indentation β 2 spaces, 4 spaces, or tabs
Convert a JSON array of objects to CSV format with proper escaping
Convert CSV data to a JSON array with proper handling of quoted fields and special characters
Decode and inspect the header and payload of any JWT token instantly
Encode text to Base64 or decode Base64 back to text β supports full UTF-8 including emojis and accented characters
Encode special characters for safe URL use or decode percent-encoded strings back to readable text
Encode HTML special characters into entities (&, <, >, ", ') or decode entities back to HTML
Convert Unix timestamps to readable dates and date strings back to Unix timestamps instantly
Parse cron expressions into plain English and see the next 5 scheduled run times
Remove CSS comments, collapse whitespace, and reduce file size instantly β no external libraries
Strip JS comments and collapse whitespace to reduce file size β strings with URLs are safely preserved
Remove HTML comments, collapse whitespace between tags, and reduce file size instantly β no external libraries
Format and beautify SQL queries with dialect-specific rules β Standard SQL, MySQL, PostgreSQL, SQLite
Test and debug regular expressions with real-time match highlighting
Generate a standards-compliant XML sitemap from a list of URLs instantly
Convert YAML to JSON instantly with support for nested objects, arrays, and all YAML data types
Convert JSON to clean, readable YAML β perfect for Kubernetes, Docker Compose, and CI/CD configs
Convert XML to JSON with attributes as @attr keys and text content as #text
Validate JSON data against a JSON Schema and get detailed error messages instantly
Convert numbers between decimal, hexadecimal, octal, and binary bases instantly
Translate text to Morse code or decode Morse code to text β supports A-Z and 0-9
Instantly beautify and format CSS code with proper indentation and structure β no external libraries
Instantly beautify and format HTML code with proper indentation and structure β no external libraries
Instantly beautify and format JavaScript code with proper indentation and structure β no external libraries
Convert TOML configuration files to JSON format instantly β supports sections, strings, numbers, booleans, and arrays
Convert JSON data to TOML configuration format instantly β supports objects, arrays, strings, numbers, and booleans
Search and explore all HTTP status codes from 100 to 511 with names and detailed descriptions
Search and look up MIME types by file extension or type name β includes 50+ common types with click-to-copy
Validate and analyze IPv4 or IPv6 addresses β check version, scope (public/private), and class instantly in your browser
Generate correct Git commands by selecting an operation and filling in parameters β no more googling syntax
Generate cURL commands and JavaScript Fetch snippets from a simple form β build HTTP requests without memorizing syntax
Visualize JSON as an interactive collapsible tree with color-coded values and copyable paths.
Search JSON data by key name and find all matching paths and values instantly.
Compare two texts side-by-side with color-coded line differences β added, removed, and unchanged.
Convert code snippets into beautiful shareable images with syntax highlighting and custom themes.
Calculate Unix file permissions interactively β click checkboxes to get numeric and symbolic chmod values.
Generate Apache .htaccess redirect rules for 301 and 302 redirects in both RewriteRule and Redirect formats.