Regex Tester
JavaScript regular expressions with live matches & capture groups.
← tux.fan Toolbox
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Pattern
Regular expression
Flags
global (g)
ignore case (i)
multiline (m)
dotAll (s)
Input text
The quick brown fox jumps over the lazy dog. 123 abc ABC.
Clear
Highlighted output
Matches & capture groups
Replace (optional)
Replacement (use $1, $2 for groups)
Copy result