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About regex101
regex101 lets you build and test regular expressions in the browser, showing matches in real time and an automatically generated explanation of each part of the pattern. It supports several flavors including PCRE2, JavaScript and Python.
Beyond matching, it offers substitution, extraction, unit tests, a regex debugger, a code generator, benchmarking and a quick reference of tokens. Examples can be saved and shared, and a paid Pro plan is available.
Strengths
- Plain-language explanation of a pattern as you type
- Supports PCRE2, JavaScript, Python and other flavors
- Debugger, unit tests and code generator
- Shareable saved examples
Limitations
- Requires a browser and internet connection
- Some features require a Pro upgrade
Details
- Pricing
- FreemiumFree to use, with a paid Pro upgrade and enterprise option.
- License
- Proprietary
- Platforms
- Web
- How it runs
- Web application
- Account
- Not required
- Works offline
- No
- Best suited for
- Writing and debugging regular expressions
- Categories
- Developer tools
- Last verified
- Added
- Provenance
- Facts checked against the developer's own pages and store listings, 1 sources on file.
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