Pricing type: Free
Categories: Data
Regular Expression Visualization Site - Create a Diagrams from your regular expressions
See the website


The images generated by Regexper are commonly referred to as 'Railroad Diagrams'. These diagram are a straight-forward way to illustrate what can sometimes become very complicated processing in a regular expression, with nested looping and optional elements. The easiest way to read these diagrams to to start at the left and follow the lines to the right. If you encounter a branch, then there is the option of following one of multiple paths (and those paths can loop back to earlier parts of the diagram).

Related tools (Data)


SQLite Playground

Your 100% static dynamic backend.


Pairwise Independent Combinatorial Testing (PICT) generates test cases.

Differencing and merging tool for Windows