Free Tool
Regex Tester for Smarter Website Decisions
Build and debug regular expressions with live matches, flags and replacement previews.
Developer Utility
Regex Tester
Matches2
What It Checks
Focus Areas for This Tool
These are the signals I would review manually when deciding what needs fixing first.
01
Pattern testing
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02
Regex flags
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03
Match positions
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04
Replacement preview
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