Regex Tester
Test patterns in real-time with visual highlights and group breakdown.
Highlight Result
Match Info
Quick Tip
Use \d for digits, \w for words, and ? for optional elements. Hover over your regex in VS Code for a full breakdown!
Online regex tester for developers
Test regular expressions in real time, highlight matches, and debug capture groups before pasting patterns into production code. Everything runs locally in your browser.
Does this support JavaScript regex syntax?
Yes. Patterns use JavaScript regular expression syntax with real-time match highlighting.
Can I test replace operations?
You can preview matches and groups. Use the pattern to debug before pasting into your code.
Is my test data sent to a server?
No. All pattern matching runs locally in your browser.
Why use this instead of regex101?
It is fast, free, privacy-first, and integrated with other TechSilo developer tools.
Use cases for this tool
Practical guides that match real search intent and show how to solve a common problem with this tool.
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