BvLogic
Tools

Regex Builder

Build a regular expression, see it explained piece by piece, and test it against your own sample text. Runs entirely in your browser.

Regex Builder & Tester

Test a pattern against sample text, see every match and capture group, and get a plain-English explanation of what the pattern does.

g global · i ignore case · m multiline · s dotall · u unicode

How to read this tool

It runs entirely in your browser and nothing you type is transmitted or stored. The output is indicative and derived from your own inputs, so it is only as good as they are. It is educational material, not professional, financial, legal or tax advice, and it is not an audit, a quote or a substitute for review by someone who can see your actual environment.

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