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Free online tools to beautify, convert and generate anything

Format JSON, preview HTML, clean up SQL, convert units, create random data and run quick calculations. No signup, no uploads, no waiting.

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JSON BeautifierBeautify and pretty print minified or messy JSON with clean indentationJSON FormatterFormat JSON with custom indentation, sorted keys and error highlightingJSON ViewerView JSON as a collapsible tree with types, counts and pathsJSON ValidatorCheck if JSON is valid and find the exact line and column of any errorJSON MinifyMinify JSON by removing all whitespace and line breaksJSON to CSV ConverterConvert a JSON array of objects into CSV for Excel or Google SheetsCSV to JSON ConverterConvert CSV or Excel data into a JSON array of objectsHTML BeautifierBeautify and indent messy or minified HTML codeHTML ViewerWrite or paste HTML and see a live rendered previewHTML MinifierMinify HTML by removing comments and extra whitespaceHTML to Markdown ConverterConvert HTML into clean MarkdownCSS BeautifierBeautify and format minified CSSCSS FormatterFormat CSS with your preferred indentation and brace styleCSS MinifierMinify and compress CSS for faster websitesPX to REM ConverterConvert pixels to rem units based on the root font sizeREM to PX ConverterConvert rem units to pixelsJavaScript BeautifierBeautify and format minified JavaScript codeJavaScript MinifierMinify JavaScript and reduce file sizeSQL FormatterFormat SQL queries with proper indentation and uppercase keywordsSQL BeautifierBeautify long SQL queries into readable, indented codeXML BeautifierBeautify and indent XML documentsXML ValidatorValidate XML syntax and find errorsYAML ValidatorValidate YAML syntax and find indentation errorsYAML to JSON ConverterConvert YAML into JSON

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Built for phones as much as desktops, with dark mode and keyboard shortcuts.

One place for everyday developer and data tools

Whether you are debugging an API response, cleaning up a SQL query, checking a JWT or converting a CSV file for Excel, you need tools that just work. Our JSON Beautifier, HTML Viewer and SQL Formatter handle large inputs instantly and show clear error messages with line numbers.

Beyond code, you will find random generators for food ideas, birthdays, phone numbers and topics, calculators for EMI, SIP, GST and age, fancy text generators for social media, and more than 1,318 unit conversions with formulas and tables.