Birdor Tools · Text

RegExp Tester · Birdor Tools

A lightweight regular expression playground for developers. Test JavaScript regex patterns in real time, toggle flags (g, i, m, s, u, y), highlight matches, and inspect groups — all in your browser.

Regular expression

Pattern is compiled using the browser's RegExp engine.

Flags:

//gi

Common patterns

Click a template to prefill the pattern and flags. You can still edit them afterwards.

Test text

Type or paste any text here. Matching segments will be highlighted on the right as you type.

Highlighted preview

All matched segments are highlighted. Turn on the g flag to find multiple matches.

Here are some emails:
  dev@birdor.com
  user@example.org

Add a hex color: #fff / #1a2b3c
And a valid IPv4 address: 10.0.0.1
And a phone number: 13812345678
And a URL: https://birdor.com/tools/regexp-tester

Match details

2 matches

#1 @ 24"dev@birdor.com"

#2 @ 41"user@example.org"

Flags behave exactly like in JavaScript's RegExp: g (global), i (ignoreCase), m (multiline), s (dotAll), u (unicode), y (sticky).