Online regex tester and debugger
Introduction
Regex101 is the go-to regex workbench: live match highlighting, step-by-step explanation, and PCRE/JS/Python engine modes.
Key Features
- Live highlighting and capture groups
- Token-by-token explanation
- Shareable test suites
- Multiple regex engines
Pros
- Explains your regex
Cons
- Can't simulate all backtracking costs
Pricing
Free to use.（See official site for current pricing）
FAQ
Works with Chinese text?
Yes - paste Chinese text directly into the test string.
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