Regex Parser

A high-performance debugger and visualizer for regular expressions across PCRE, JavaScript, and Python flavors.

Regex101 acts as the primary tool for decomposing complex patterns into readable logic. It supports major engines including PCRE2 and ECMAScript, providing real-time match highlighting and a detailed explanation tree for every token. Use it to troubleshoot lookarounds or capture groups instantly. With support for 10 distinct flavors and a massive library of community patterns, it converts cryptic strings into functional code.

https://regex101.com