Regex Playground

How to Use This Tool

• Write your regex: Enter your expression in the first input box. Do not wrap it in forward slashes.
• Add flags: Use the small box next to it to add Javascript flags like g (global), i (case-insensitive), or m (multiline).
• Test String: Paste the text you want to search through in the large textarea. Matches will be highlighted in yellow in real-time.
• Replacement (Optional): If you want to preview a .replace() operation, type a replacement string (using capture groups like $1, $2 if needed). The result appears instantly at the bottom!