Developer Tools
19 free developer tools. Format and convert JSON, CSV, XML, YAML, HTML, CSS, JS, SQL. Test regex, generate cron expressions, slugs, timestamps, and convert colors.
🔒 All processing happens in your browser. No data is sent to any server.
JSON FormatterBeautify, minify, sort keys, validate
JSON → CSVArray of objects, header row, delimiter control
JSON → XMLTag names from keys, attributes optional
JSON → YAMLIndent size control, quoted strings optional
CSV → JSONHeader row auto-detect, array or object output
XML → JSONAttributes, CDATA and namespace handling
YAML → JSONMulti-document support, strict parse
HTML FormatterIndent, minify, attribute ordering
CSS FormatterBeautify or minify, vendor prefix control
JS FormatterPrettify with configurable indent and semicolons
SQL FormatterKeyword case, indent style, dialect aware
XML FormatterIndent, minify, XML declaration control
Markdown → HTMLGFM, code highlighting, sanitize option
HTML → MarkdownCommonMark output, table and list support
Regex TesterFlags, match groups, replace mode with preview
Cron GeneratorVisual builder, human-readable schedule output
Slug GeneratorURL-friendly slugs, separator and case control
TimestampUnix, ISO 8601, locale formats
Color ConverterHEX, RGB, HSL, HWB — live preview