Developer Tools

JSON formatter, regex tester, CSS/HTML minifier, Markdown preview, and SQL formatter.

JSON Formatter/Validator

Pretty-print, minify, and validate JSON with error reporting.

Regex Tester

Live match highlighting and group extraction for regular expressions.

CSS Minifier/Beautifier

Minify or beautify CSS code with size comparison.

HTML Minifier/Beautifier

Minify or pretty-print HTML with size comparison.

Markdown Preview

Live side-by-side Markdown editor and HTML preview.

SQL Formatter

Beautify SQL queries with proper indentation and uppercase keywords.

Cron Expression Parser

Describe cron schedules in plain English, show next run times.

CSS Unit Converter

px/rem/em/vh/vw/pt/cm/mm with configurable base font size.