Recommended Regex Testing and Visualization Tools

Test and debug your regular expressions visually using these online sandboxes.

1. Regex101

Regex101 is the most popular online regex tester. It provides a real-time match highlighter, a step-by-step pattern explanation panel, and a match information table.

• Highlights: Supports PCRE, JavaScript, Python, Golang, and Java flavors. Shows detailed group capture results and supports saving patterns as shareable links.
• Link: regex101.com

2. RegExr

RegExr is a community-powered regex tester with a built-in library of example patterns contributed by other developers. It is excellent for learning via real examples.

• Highlights: Visual match highlighting, community pattern library, cheat sheet reference panel, and hover explanations for each part of your pattern.
• Link: regexr.com