Can I export the visualization?

Yes! The diagram is rendered as SVG. You can right-click to save as an image or copy the SVG code for documentation, blog posts, or presentations.

How is this different from regex101?

regex101 focuses on match testing and text explanation. This tool focuses on converting regex into railroad diagrams, letting you see the control flow and matching paths at a glance — ideal for teaching, documentation, and code review.

Free Online Regex Visualizer - Railroad Diagrams · Syntax Highlighting

📝 Enter Regex

Phone Email URL Date YYYY-MM-DD IP Address Hex Color Strong Password

Regular Expression (JavaScript syntax)

Test Text

🛤️ Railroad Diagram

Enter a regex to generate visualization

✅ Match Results

❓ FAQ

What is regex visualization?

Converts regex into railroad diagrams, showing structure and matching flow. Each character, group, and quantifier becomes a visual node, making complex patterns easier to understand.

Which regex syntax is supported?

JavaScript/ECMAScript syntax, including character classes, quantifiers, groups, captures, lookahead/lookbehind, named groups, and Unicode escapes.

Can I export the diagram?

Yes! The diagram is SVG. Right-click to save as image or copy SVG code for documentation.

🔍 Regex Visualizer