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Regex Tester
Test regex patterns with live match highlighting, capture groups, flags, and reusable developer snippets.
Create flowcharts with drag-and-drop nodes. Add processes, decisions, and I/O shapes. Connect nodes with arrows, export as PNG, or generate Mermaid code.
How to use
Flowcharts are the universal language for describing processes and algorithms. This visual editor lets you create professional diagrams with standard shapes — rectangles for processes, diamonds for decisions, parallelograms for input and output.
The Mermaid code export is particularly useful. Mermaid is a text-based diagramming language supported by GitHub, GitLab, and many documentation tools. You can paste the generated code directly into markdown files and it renders as a diagram.
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