Which regex dialect is used?
It uses standard ECMAScript / JavaScript regular expression syntax.
How to Use Regex Tester & Debugger
Step 1: Enter Regex Pattern
Type your regular expression pattern and toggle flags (g, i, m, s).
Step 2: Provide Test String
Paste the sample text you want to evaluate.
Step 3: Review Matches
Matches and capture groups are highlighted with match indices and count.
Key Features & Capabilities
- Real-time match highlighting with group breakdown
- Interactive flag toggles (Global, Case-Insensitive, Multiline, DotAll)
- Common preset patterns (Email, URL, Phone, IPv4, UUID)
Specifications & Limits
- Batch Processing: Single Item
- Free Tier Limit: Real-time regex evaluation and match highlighting
Frequently Asked Questions
Can I inspect capture groups individually?
Yes, matched capture groups ($1, $2, etc.) and named groups are indexed in the results panel.
Related Tools
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- JSON Formatter & Validator — Beautify, minify, validate, and repair JSON data with syntax highlighting.