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Regex Parser & Tester Matches and captures in a real engine
Regex Extractor Capture groups to JSON, CSV or TXT
Regex Replace Replace matches; see before and after
Regex Split Split text; empty items stay visible
Regex Generator from Examples Build a regex from marked examples
Regex Visualizer A regex as a tree linked to its source
Compare Regex Engines Run two engines, see where they differ

Engine testers

JavaScript Regex Tester This browser's JavaScript RegExp
Python Regex Tester Python's re module, in this browser
PCRE2 Regex Tester PCRE2 as WebAssembly, in this browser
Go Regex Tester Go's regexp package, in this browser

Learn

Regex Syntax Reference Anchors, groups, lookaround, flags
Regex Troubleshooting Fix a regex that fails or overmatches
Supported Regex Engines Versions, flags and download sizes

Saved on This Device

Open, copy, import or delete workspaces saved on this device; nothing here is synced.

The list of saved workspaces needs JavaScript.

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Next steps

Regex Parser & Tester
RegexParser Help

Privacy and data on this device

Your regex and text stay in this tab’s memory until you choose Save, or an available remote run.
Saving to this device: only when you choose Save or Import.
Usage statistics: off. This release sends no usage events.
Sharing: switched off in this release; nothing is uploaded.
Remote runs: only when available and you confirm what will be sent.

What is stored and sent

RegexParser Help
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