# Regex Tester

URL: https://kitpace.com/tools/regex-tester

Regex Tester by Kitpace is a free browser-based regular expression tester. It highlights matches live, supports regex flags, includes common presets for email, URL, dates, phones, UUIDs, colors, JWTs, and files, and shows match indexes without signup.

## What it does

Free browser-based Regex Tester to test regular expressions with live match highlighting, preset patterns, flags, match tables, and capture group feedback.

## Features

- Live regex match highlighting
- Regex flags
- Preset patterns
- Match table
- Capture group feedback
- Browser-based processing

## Best for

- Developers testing patterns
- QA engineers validating text extraction
- Data cleaners checking input formats
- Students learning regex

## Privacy

Regex matching happens locally in the browser. Test text is not uploaded.

## Use cases

- Test an email regex
- Find URLs in text
- Match dates or phone numbers
- Validate UUID-like text
- Inspect JWT-like strings
- Debug regex flags

## When to use Regex Tester

Use Regex Tester when you need fast live regex highlighting, match counts, indexes, and common pattern presets in the browser.

## When not to use Regex Tester

Do not use regex as your only validation for complex formats or security-sensitive parsing. Prefer formal parsers where available.

Last updated: May 2026
Maintained by: Kitpace