Regex Tester
Test regular expressions online with live match highlighting, flag toggles, replacement previews, and named group inspection.
Regular expression
Current expression: /\b([A-Z]{2,})\b/g
Flags
Global (g)
Find every match instead of stopping after the first.
Ignore case (i)
Match letters without caring about upper or lower case.
Multiline (m)
Let ^ and $ match the start and end of each line.
Dotall (s)
Allow the dot token to match newline characters.
Unicode (u)
Enable full Unicode support and named capture groups.
Sticky (y)
Only match from the current index without skipping ahead.
Leave blank if you only need to test matches.
Matches
4
Execution time
0.21 ms
Flags
g
Longest match
5 chars
Highlighted matches
Match breakdown
REGEX
Captured groups
Group 1
REGEX
HTTP
Captured groups
Group 1
HTTP
HTML
Captured groups
Group 1
HTML
CSS
Captured groups
Group 1
CSS
Replacement preview
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