Question 1

Is this regex tester free?

Accepted Answer

Yes, completely free. No signup, no limits.

Question 2

Which regex flavor does this support?

Accepted Answer

JavaScript (ECMAScript) regex syntax, which is the most widely used in web development.

Question 3

Does my data leave my browser?

Accepted Answer

No. All matching happens locally in your browser. Nothing is sent to any server.

Question 4

Can I see capture groups?

Accepted Answer

Yes. Each match shows numbered capture groups and named groups if you use them.

Question 5

What flags are supported?

Accepted Answer

Global (g), case-insensitive (i), multiline (m), dotAll (s), and unicode (u) flags.

Regex Tester

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