Regular expressions are an incredibly powerful tool for searching and manipulating text, but they can be tricky to get right. Our Regex Tester provides an interactive environment to build and debug your patterns. Simply enter your regular expression and flags (like 'g' for global search or 'i' for case-insensitivity), provide a string to test against, and the tool will show you the results in real-time. It highlights all the matches within your text and provides a detailed breakdown of each match and its capture groups. It's an indispensable utility for any developer working with text processing.
⚙️Regex Tester
/ /
Frequently Asked Questions
What does the 'g' flag do?
The 'g' flag stands for 'global search'. Without it, the regular expression engine will stop after finding the first match. With the 'g' flag, it will find all possible matches within the test string.
What is a capture group?
A capture group is a part of your regular expression pattern enclosed in parentheses `()`. It allows you to extract a specific portion of the overall match. For example, in the regex `/(\d+)-(\w+)/`, the first group captures numbers and the second captures word characters.
