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Test regular expressions with live match highlighting, group capture, and find-and-replace.
Write and test regular expressions with live match highlighting, capture group inspection, and a built-in replace mode — all running locally in your browser with no server required.
Developers validate and debug regex patterns before embedding them in code. Data engineers test extraction patterns against sample CSV or log data. QA engineers build input-validation patterns for form fields.
Translate cron strings into readable schedules and next run times.
Generate a tailored .gitignore file for your project stack.
Convert CSV data to JSON and back for APIs and spreadsheets.
Decode browser, OS, and device details from a UA string.