Regex101

Name: Regex101
Author: goodhabitapp

Regular expression tester with syntax highlighting, explanation, cheat sheet for PHP/PCRE, Python, Go, JavaScript, Java

As of May 2026, Regex101 has 186 users in the Developer Tools category.

goodhabitapp Developer Tools

Chrome Web Store ↗.crx

Users+2.2%

186

Rating0%

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— reviews

Reviews0%

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Version

1.0

Manifest V3

History

2 snapshots

Tracking since Apr 25, 2026.

View as table

Date	Users	Rating	Reviews	Version
Apr 25, 2026	182	—	—	1.0
May 22, 2026	187	—	—	1.0
Now	186	—	—	1.0

Permissions & access

Permissions: None declared
Host access: None declared

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About

Regex101 - The Ultimate Regular Expression Tester

Need a quick and reliable way to test your regular expressions? Regex101 is a simple yet powerful tool designed for developers, coders, and data wranglers who need to test or generate regex patterns on the fly.

Key Features:

Regex Tester: Easily test your regular expressions and see instant results.
Regex Generator: Craft regex patterns with ease for any task.
Syntax Highlighting: Understand complex patterns with clear highlighting of your regex.
Regular Expression Validator: Validate your regex to ensure it works as expected.
Cheat Sheet: Handy reference for popular regex patterns in languages like PHP, Python, JavaScript, Java, and more.
Regex Match: Test and visualize pattern matches in real-time.
Regexp Checker: Verify the accuracy of your regular expressions.
Regex Pattern Tool: Build and refine your regex using our intuitive interface.
Whether you're new to regular expressions or an experienced coder, Regex101 makes it easy to work with regex, validate patterns, and match text across various languages like PHP, Python, JavaScript, and more. Perfect for anyone searching for a reliable regex online tester, regex checker, or a comprehensive regex editor.

Regex101 is your go-to regex tool for creating, testing, and mastering regular expressions online. Stop guessing—start testing with Regex101.