Programmatically Generate Diagrams for GitHub Readmes

In plain words

This tool enables developers to automatically create diagrams for GitHub README files using code. Launched in 2019, it allows users to generate visual documentation programmatically rather than manually designing or uploading static images. The solution targets software developers who want to maintain diagrams as code, keeping documentation synchronized with their projects through version control alongside their source code.

written from the facts on this page · September 2026

• 
  GitDiagram2025 · gitdiagram.com · ▲342

  GitDiagram is an open-source micro dev-tool that I made this past week Given any public GitHub repository it generates diagrams in Mermaid.js with Claude 3.5 Sonnet I extract information from the file tree and README for details and interactivity (you can click components to be taken to relevant files and directories) Also, you can replace "hub" with "diagram" in any repository URL to access its diagram I created this because I wanted to contribute to open-source projects but quickly realized their codebases are too massive for me to dig through manually, so this helps me get started I do…

• 
  Diagram as code tool with draggable customizationsOct 2025 · github.com · ▲266

  In 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…

• MA
  Mermaid ASCII Diagrams2024 · mermaid-ascii.art · ▲234
• 
  Sketch2scheme2024 · sketch2scheme.com · ▲208

  Convert hand-drawn diagrams into digital schemes

• 
  GUI for editing Mermaid class diagrams2025 · docs.mermaidchart.com · ▲230
• 
  Ferrite – Markdown editor in Rust with native Mermaid diagram renderingJan 2026 · github.com · ▲241

  Ferrite: Fast Markdown/Text/Code editor in Rust with native Mermaid diagrams Built a Markdown editor using Rust + egui. v0.2.1 just dropped with major Mermaid improvements: → Native Mermaid diagrams - Flowcharts, sequence, state, ER, git graphs - pure Rust, no JS → Split view - Raw + rendered side-by-side with sync scrolling → Syntax highlighting - 40+ languages with large file optimization → JSON/YAML/TOML tree viewer - Structured editing with expand/collapse → Git integration - File tree shows modified/staged/untracked status Also: minimap, zen mode,…

• 
  /dev/null▲456

  a social network for devs

  Dev tools · 2d ago · dev-null.sh

• 
  Whiteboard (YC W26) – an open-source IDE for thoughtful software design▲423

  open-source IDE for thoughtful software design. Contribute to devdotfast/whiteboard development by creating an account on GitHub.

  Dev tools · 27d ago · github.com

• 
  Reladraw – A diagram language where you decide where to place things▲411

  Contribute to reladraw/reladraw development by creating an account on GitHub.

  Dev tools · 25d ago · github.com

• 
  OpenBot▲362

  Grok Bot alternative: free, local, open-source, multiplayer

  Dev tools · 22d ago · openbot.run

• 
  Talanoa▲338

  Hi HN, I’m a fullstack developer, and honestly, I’ve lost count of how many side projects I’ve worked on over the years. But one idea kept coming back to me: a different kind of email client. It first came to me in 2014: “What if we could handle emails more like conversations?” Every year, I’d revisit this concept in my “Build Notes.” Ten years later, no one had built exactly what I had in mind — so I finally decided to do it myself. That’s how Talanoa was born. I wanted something focused on people, not timelines. I was tired of marking messages as unread just to remember to reply later, or…

  Dev tools · 20d ago · talanoa.email

• 
  CoreSpeed▲332

  One MCP for everything your agents need: apps, memory, tools

  Dev tools · 27d ago · corespeed.io

• 
  Jumbo: Privacy & Security▲936

  Your privacy assistant, by Sunrise co-founder

  Life & fun · 2019 · apps.apple.com

• 
  Lorem Picsum – Lorem Ipsum but for photos▲880

  Lorem Ipsum... but for photos

  Life & fun · 2019 · picsum.photos

• 
  UserGuiding 2.0▲782

  An easy way to show how your product works 😻

  Work · 2019 · userguiding.com

• 
  Startup 3▲745

  Create websites and landing pages with Startup 3 🚀

  Dev tools · 2019 · designmodo.com

• 
  1MB – Free and easy static website hosting and database▲744

  Unlock the full potential of your website with 1MB

  Dev tools · 2019 · 1mb.site

• 
  Mercury▲730

  Banking stack for startups

  Commerce · 2019 · mercury.com