Client-Side Regex Tester — Validate and Test Patterns Instantly
7/19/2026•Chaitanya Shimpi

Writing and debugging regular expressions is notoriously tricky. Toolich's Regex Tester provides an interactive environment to test patterns against target strings with live highlight match feedback.
The tester highlights matching groups, displays capture indices, and offers explanation details on how the expression is parsing the string step-by-step.
It includes a handy cheat sheet of common regex patterns, wildcards, and anchors to help you build complex validator patterns quickly.