Preparing your Lab
AllScienceTools
AllScienceTools
Test and debug Regular Expressions in real-time. Includes highlighting for matches and capturing groups.
Regex looks like gibberish (^([a-z0-9]+)$), but it is the most powerful text processing tool in existence. Our Regex Tester allows you to test patterns against strings in real-time.
Debugging regex patterns without a tester is impossible. This tool highlights matches instantly, helping you validate emails, phone numbers, or extract data from logs.
Real-time highlighting
Supports JS Regex flavor
Cheatsheet for common tokens (\d, \w, +)
Explanation of matches
Regular Expressions are based on Formal Language Theory. They define a 'Regular Language'—a set of strings that can be matched by a finite state machine.