Regex Explainer
Deconstruct regular expressions. Analyze quantifiers, capture groups, sets, boundaries, and flags with clear explanations.
Regex Explainer
Break down and visually explain regular expressions in plain English.
Expression Properties
Detailed Token Breakdown
How to use Regex Explainer
- Paste your regular expression or select a common preset (Email, URL, IP).
- View the active modifiers and flags explained automatically.
- Read the detailed token cards detailing what each segment matches step-by-step.
What is Regex Explainer?
Regex Explainer parses regular expressions client-side and builds a comprehensive visual map of each matching token. It extracts pattern flags, asserts word boundaries or string anchors, and breaks down character classes, capturing groups, and quantifier repetitions.
This tool is excellent for debugging complex regular expressions or documenting pattern validations for developers and systems analysts.
FAQ
- Can I use standard flags like /gi?
- Yes. Slashes wrapping the pattern and trailing flag modifiers (g, i, m, s, u, y) are parsed automatically.
- Is it safe to paste private expressions?
- Yes. The parsing is done entirely client-side inside your browser without uploading to any remote servers.
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