Developer Kit
Developer
Regex Tester
Test patterns with live matches.
Runs locally in your browser. No upload.
Paste input, choose an action, then copy or download the result.
Text
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2 matches
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Result summary
Review the key fields below. Open developer details for the full raw JSON.
- Pattern
- \btool\w*
- Flags
- gi
- Count
- 2
- Matches
- 2 items
Developer details
{
"pattern": "\\btool\\w*",
"flags": "gi",
"count": 2,
"matches": [
{
"match": "tools",
"index": 10,
"groups": []
},
{
"match": "tools",
"index": 38,
"groups": []
}
]
}Test cases
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Case verdicts
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Result summary
Review the key fields below. Open developer details for the full raw JSON.
- Valid
- true
- Pattern
- \btool\w*
- Flags
- i
- Cases
- 2 items
- Matched
- 1
- Unmatched
- 1
Developer details
{
"valid": true,
"pattern": "\\btool\\w*",
"flags": "i",
"cases": [
{
"line": 1,
"text": "tools should match",
"matches": true
},
{
"line": 2,
"text": "utility should not match",
"matches": false
}
],
"matched": 1,
"unmatched": 1,
"safety": {
"nestedQuantifiers": false,
"ambiguousDotStar": false,
"unboundedLookaround": false,
"reviewRecommended": false,
"note": "Heuristic only. Test with representative payload sizes before using in latency-sensitive paths."
}
}Replacement output
BoringKit utility are practical utility utility.