D2 is a markup language recognized by GitHub Linguist and used with .d2.
Quick facts
What is D2
D2 is a markup language recognized by GitHub Linguist and used with .d2.
GitHub Linguist classifies D2 as a markup language, typically using extensions such as .d2.
File extensions:
Related languages
Frequently asked questions
D2 is a markup language recognized by GitHub Linguist and used with .d2.
Common extensions include .d2.
Sources & standards
Updated 2026-09-13
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This page provides original, human-reviewed information about programming languages such as D2, the Programming Language Reference and related concepts. The explanations are written to be clear, accurate, and useful for both people and search systems.
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