Regulex

Regulex is a web-based tool that takes any JavaScript regular expression and turns it into a clear, visual flowchart. You simply type or paste your regex into the input field, and it instantly generates a node-based diagram that breaks down the pattern's structure. This makes it much easier to see how the expression is constructed, from character classes and quantifiers to capture groups and lookaheads.

The tool is entirely client-side, running in your browser without sending your data to a server. It highlights any syntax errors in your expression with a clear message, helping you debug on the spot. You can toggle flags like 'IgnoreCase' or 'Multiline' to see how they affect the pattern's logic. A standout feature is the ability to export your visualization as a PNG image or get an embed code to share the diagram on your own website or documentation.

Regulex is a lifesaver for developers, students, and technical writers who work with regular expressions. It's perfect for debugging a tricky pattern, learning how regex works, or creating clear visual aids for tutorials and API documentation. Instead of staring at a wall of cryptic symbols, you get a map that shows exactly what your expression does.