Step 1
Test text
Start by pasting the source content into the input area with enough context to work from.
Regex Tester
Test regex matches, groups and flags online. Free to use with no sign-up required.
Start here
Place your content in the input area, adjust the options, and run the tool. The result shows up on the right.
Include the full content, relevant context, and your goal when possible to reduce rework.
Supports manual flag input so you can validate named groups and repeated matches quickly.
Once the result is ready, copy it, refine it, or continue to the next step right away.
Match details and capture groups will appear here.
How To Use
You do not need to read the full page first. These three steps are enough to start using the tool.
Step 2
Process
Pick the options you need, then run Regex Tester and get the result in seconds.
Step 3
Match output
Review the result, copy it, and move straight into the next step of your workflow.
FAQ
Which flags are supported?
It supports native JavaScript RegExp flags such as g, i, m, s, u and y.
Does it show capture groups?
Yes. Both numbered groups and named groups are included in the output.
What is it best for?
It works well for log extraction, form validation, text parsing and code debugging.
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