Diagramming tool that helped me understand codebases much faster
I built Code Canvas, a canvas where we create diagrams and link their components to source code in a two-way mapping: 1. Click on the diagram component to reveal the underlying source code 2. Click on the source code block to reveal which functionality it serves in the big picture on the diagram - The app also has a simulations feature where we can create tutorials and runtime simulations directly on the diagram. - The diagram stays in sync with source code changes. It has a companion scanner that runs on new pull requests to ensure the relevant components of the diagram are updated before…
Diagramming tool that helped me understand codebases much faster launched on March 13, 2024 with 10 votes, #1,633 of 4,270 launches that month and more than 75% of that year's launches. The site was still online in September 2026, 2 years on.
In plain words
Code Canvas is a diagramming tool for developers that links visual diagrams to source code through two-way mapping. Users can click diagram components to view underlying code, or click code blocks to see their role in the system architecture. The tool includes a simulations feature for creating tutorials and runtime demonstrations directly on diagrams. It automatically keeps diagrams synchronized with code changes through a companion scanner that validates updates on pull requests, helping developers understand complex codebases faster and reduce mental overhead.
written from the facts on this page · September 2026
From the sources
CodeCanvas - Create architecture diagrams linked to source code
In the maker’s words, at launch
I built Code Canvas, a canvas where we create diagrams and link their components to source code in a two-way mapping: 1. Click on the diagram component to reveal the underlying source code 2. Click on the source code block to reveal which functionality it serves in the big picture on the diagram - The app also has a…
Does a similar job
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Diagram as code tool with draggable customizationsOct 2025 · github.com · ▲266In the past I've used declarative diagram generation tools like Mermaid.js a lot for quickly drawing up things but for presentations or deliverables I find that I have to then move the generated diagrams over to a tool like Lucidchart which allows full control of the organization and customization. Therefore I am now working on this to combine the benefits of both into just one tool which can do both functions. The project is certainly in the early stages but if you find yourself making architecture diagrams I'd love to hear your thoughts on the idea or even a Github issue for a feature…
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