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Regex Tester

Test regular expressions live with match highlighting and groups.

Flags:

Highlighted matches

How to use

Type a pattern (without slashes), toggle flags and watch matches highlight live below along with capture groups for every hit.

Note

Uses the browser's native RegExp engine (JavaScript flavor). All testing happens locally.

Frequently asked questions

Slashes around pattern?

Do not include them; type the raw pattern only.

Too many matches slow?

Display caps at 500 matches but counting continues internally.

Lookahead support?

Yes, full JavaScript regex flavour including lookarounds.

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About Regex Tester

Test regular expressions with live matching. Use this free regex tester online from BlissTech7 Solutions - test regular expressions with live matching. Free, fast and 100% in your browser with no upload. Perfect for students, professionals and businesses in India. No signup, instant results and works offline.

How it works

Runs entirely in your browser. No file is uploaded - privacy by design, works offline.

Example

Paste sample input for Regex Tester - Click Format/Convert - Copy result in one click.
Handles large inputs locally.

How to use

  1. Enter your values in the fields above.
  2. Click Calculate / Convert to see instant results.
  3. Copy, share or download - your data never leaves your device.

Why use this tool

FAQ

Is Regex Tester free?

Yes, completely free with no signup and no limits. Runs 100% in your browser.

Is my data private?

Yes, your input never leaves your device. Nothing is stored or sent to any server.

Does it work offline?

Yes, after the page loads, the calculator works offline. Bookmark it for quick access.

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