Regex Tester
Test and debug regular expressions in real-time with match highlighting, group capture and flags support.
const tool = {
name: 'Regex Tester',
type: 'browser-based',
cost: free,
privacy: true,
}
name: 'Regex Tester',
type: 'browser-based',
cost: free,
privacy: true,
}
Regex Tester
Test and debug regular expressions in real-time with match highlighting, group capture and flags support.
Full UI launching soon
Want early access? Let us know →
How to Use Regex Tester
01
Enter your regex pattern
02
Type test string and matches highlight live
03
Inspect captured groups in the panel below
Why Use This Tool
100% Private
Your data never leaves your browser. Nothing is uploaded to any server.
Instant Results
Modern browser APIs deliver results in milliseconds with no waiting.
Free Forever
No subscriptions, no credits, no paywalls — ever.
Frequently Asked Questions
What regex flavour is used?
JavaScript RegExp — works natively in the browser.
Are regex flags supported?
Yes — g, i, m, s and u flags are all supported.
Can I test named capture groups?
Yes — named groups appear labelled in the match details panel.
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