CASCII – Put Diagrams in Your Code

In plain words

CASCII is a development tool that enables developers to create and embed diagrams directly within their code. It allows teams to maintain visual representations alongside their codebase, making it easier to document architecture, workflows, and system design. The tool integrates diagrams into the development environment, helping developers keep technical documentation current and accessible without switching between separate applications.

written from the facts on this page · September 2026

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  Cascii – A portable ASCII diagram builder written in vanilla JavaScript2025 · github.com · ▲238

  3 months ago I wanted to draw an ASCII diagram to include in some documentation at work. I found the few tools online to be insufficient, and was suprised there wasn't a more complete tool to get the job done. Since, I've built Cascii from scratch in vanilla Javascript (I'm not an FE dev, it might be obvious...). I hope it works alright. Please check out the live version at https://cascii.app, report problems, make diagrams to improve your code's documentation. Hope you enjoy using it.

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