Regex Tester
Test regular expressions with real-time matching. Free developer tool.
All processing happens in your browser. Your data never leaves your device.
//
How to Use
- 1{ "title": "Enter regex", "description": "Type your regular expression pattern." }
- 2{ "title": "Set flags", "description": "Choose g, i, m, s flags." }
- 3{ "title": "Test string", "description": "Enter text and see matches highlighted." }
What is Regex Tester?
Regex Tester is a free online code tool for developers. All processing happens locally in your browser.
Key Features
- Real-time matching
- Capture groups display
- Match position info
- Highlighted results
- All JS regex flags
Regex Tester vs Other Tools
| Feature | Regex Tester | Other Tools |
|---|---|---|
| Client-side processing | Yes | Varies |
| No signup required | Yes | Often required |
| Privacy-first (no data sent) | Yes | Rarely |
| Free & unlimited | Yes | Often limited |
| No ads interruption | Yes | Often no |
FAQ
What code tools are available?
Available code tools include diff comparison, regex testing, JSONPath expression testing, SQL-to-TypeScript conversion, and Markdown table generation.
Are code tools free?
Yes, all code tools are completely free with no registration required.