Build and test regular expressions instantly against sample text. Visualize matches, test groups, and validate patterns in real-time.
Email address
/^\S+@\S+\.\S+$/
Phone number (XXX-XXX-XXXX)
/^\d{3}-\d{3}-\d{4}$/
URL
/^https?://[\w\-]+(\.[\w\-]+)+[/#?]?.*$/i
Date (YYYY-MM-DD)
/^\d{4}-\d{2}-\d{2}$/
Numbers with commas
/\b\d{1,3}(?:,\d{3})*(?:\.\d+)?\b/g
Capitalized words
/\b[A-Z][a-z]+\b/g
Simple JSON object
/\{\s*"[^"]+"\s*:\s*[^}]+\s*\}/g
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