Which regex flavor does it use?

JavaScript's RegExp engine — same as Node.js and any modern browser.

Not yet — copy the pattern manually. Your work is local and won't persist between sessions.

Converters Tool

Regex Tester

Test regular expressions live with match highlighting, groups, and replace preview.

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Pattern

//g

g i m s u y

Test string

Matches (2)

Reach us at hello@oneclickuse.com or support@example.org for help.

Replace with

Replaced output

Reach us at [hello at oneclickuse.com] or [support at example.org] for help.

Captured groups

Match #1: hello@oneclickuse.com at index 12

$1 = hello
$2 = oneclickuse.com

Match #2: support@example.org at index 37

$1 = support
$2 = example.org

How it works

STEP 01

Type your pattern (without slashes).

STEP 02

Toggle flags (g, i, m, s, etc.) and paste a test string.

STEP 03

Matches are highlighted; capture groups are listed; try replacements with $1, $2 syntax.

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