#01INDEX 6
https://2xbr.comGROUPS / 1: https · 2: 2xbr.comRegex Studio
Build and test JavaScript regular expressions, inspect match groups and indices, highlight results and preview replacements in one local workspace.
REGEX STUDIO / JAVASCRIPT ENGINE2 MATCHES
FLAGS
TEST TEXT69 / 20 000
Visit https://2xbr.com/tools/ or HTTP://example.com/docs for details.
MATCHESMAX 200
#02INDEX 33
HTTP://example.comGROUPS / 1: HTTP · 2: example.comOUTPUT PREVIEW
Visit 2xbr.com/tools/ or example.com/docs for details.ENGINE / JAVASCRIPTReal RegExp
Patterns and flags run through the browser JavaScript engine, with syntax errors surfaced directly.
LOCAL / PRIVATENo upload
Patterns, sample text and replacement output remain in the active browser tab.
SAFETY / LIMIT20K characters
Input and match counts are capped. Complex expressions can still be computationally expensive.