Regex & Code
Regex & Code — 7 free browser-based developer tools including Regex Tester, Regex Cheatsheet and Cron Expression Generator. Everything runs locally with no signup or uploads, so your data stays private and results are instant.
7 tools
Regex TesterFree online regex tester that validates and runs regular expressions against your text with real-time highlighted matches, named and numbered capture groups, flag toggles and a replacement preview for building and debugging patterns.
Regex CheatsheetFree searchable regex cheatsheet that organizes regular expression syntax by category such as metacharacters, quantifiers, anchors and groups, with one-click pattern copying and JavaScript regex compatibility for quick reference.
Cron Expression GeneratorFree online cron expression generator with a visual editor for the minute, hour, day, month and weekday fields, building valid crontab syntax and previewing the next scheduled execution times.
SQL FormatterFree online SQL formatter that beautifies and indents queries. Choose 2- or 4-space indentation, uppercase keywords like SELECT and FROM, and pretty-print MySQL and PostgreSQL.
HTML Formatter/MinifierFree online HTML formatter that beautifies messy markup with clean indentation and line breaks, or minifies it by stripping whitespace to shrink file size, right in your browser
CSS Formatter/MinifierFree online CSS formatter and minifier that beautifies stylesheets with consistent indentation and line breaks, or strips whitespace and comments to minify CSS and reduce file size for production.
JavaScript Formatter/MinifierFree online tool that formats JavaScript code with the Prettier engine for consistent indentation and style, or minifies it by stripping whitespace and comments to reduce file size