Debug regex groups online with TechSilo Regex Tester
Learn how to use TechSilo Regex Tester to inspect capture groups, test replacements, and fix broken patterns instantly.
Ready to try it?
Use the free Regex Tester directly in your browser. No complicated setup required.
Why capture groups are the hard part
Most regex bugs are not the pattern itself, but the capture groups and replacement results. You can have a working match but a broken output because the wrong group is referenced.
TechSilo Regex Tester shows matches and groups side by side so you can immediately see what each group captured and whether your replacement string is correct.
How to debug groups in three steps
1. Paste the target text into the input field. 2. Enter your regex pattern. 3. Inspect the captured groups and replacement preview. If a group is missing, adjust the pattern or the replacement string.
This workflow is faster than trial-and-error in code because you do not need to rerun the script after every small change.
Why use Regex Tester?
Free to use
Get the job done directly in your browser without unnecessary setup.
Built for real work
TechSilo tools are designed around practical developer and web workflows.
Fast in your browser
No unnecessary downloads or complicated installation process.
Simple interface
Focus on the task instead of navigating through unnecessary features.
Try Regex Tester online
Skip the complicated setup and get started with TechSilo's Regex Tester directly in your browser.
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