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Regex Explainer
Leg uit wat een reguliere expressie overeenkomt, token voor token, en markeer constructies die catastrofale backtracking veroorzaken.
🔒 Deze tool werkt volledig in je browser. Je bestanden worden nooit naar een server geüpload.
Developer
Regex Explainer
Frontend preview — no upload or external service.
Explanation
Anchored at start, captures one or more word characters, then @, then a host group, then a dot and a 2+ letter TLD, anchored at end. No nested quantifiers — safe from backtracking blowup.
How Regex Explainer works
- Open Regex Explainer and review the example state before entering your own values.
- Enter or select the information needed for Regex Explainer.
- Review the result and adjust the inputs if you want to compare another case.
Explain what a regular expression matches, token by token, and flag the constructs that cause catastrophic backtracking. The interactive workspace runs in your browser, so you can review the result without creating an account.
FAQ
What is Regex Explainer used for?
Explain what a regular expression matches, token by token, and flag the constructs that cause catastrophic backtracking.
Do I need an account?
No. The tool is available directly in the browser without an account or sign-up.
What should I do if the result looks unexpected?
Check the entered values and compare them with the guidance shown in Regex Explainer. Use the result as a planning aid and verify important decisions independently.