Regex Tester & Debugger
Experiment with regular expressions, inspect every matched occurrence and named capture group, and test replacements with zero server transmission.
100% Client-Side Engine: Regex evaluation executes natively using your browser’s JavaScript RegExp engine. No string data is sent over the network.
Popular Presets:
//gi
Flags:
151 characters
🎯 Matched Segments
2 matches foundMatch #1Index: 38..91 (53 chars)
https://techtools-chi.vercel.app/tools/json-formatter
Capture Groups:
$protocol:https
$domain:techtools-chi.vercel.app
$path:/tools/json-formatter
Group 1 ($ 1):https
Group 2 ($ 2):techtools-chi.vercel.app
Group 3 ($ 3):/tools/json-formatter
Match #2Index: 112..151 (39 chars)
https://github.com/valdemoko/techtools.
Capture Groups:
$protocol:https
$domain:github.com
$path:/valdemoko/techtools.
Group 1 ($ 1):https
Group 2 ($ 2):github.com
Group 3 ($ 3):/valdemoko/techtools.
How It Works
- Runs locally in your browser using standard Web APIs.
Frequently Asked Questions
Are my files uploaded?
No. This tool processes input locally in your browser and creates the result on your device.
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