What is Markmaid?
Markmaid is a powerful Chrome extension that lets you instantly convert selected Markdown with Mermaid syntax into visual diagrams—right within your browser.
Whether you’re copying code from ChatGPT or writing technical docs, Markmaid helps you preview flowcharts, sequence diagrams, and more without leaving the page.
Check out the video on Youtube
Why I Built It
As a developer, I often copy Mermaid diagram code from tools like ChatGPT or some technical documentation — but there’s no quick way to preview the diagram. I’d have to switch tabs, open an online editor, and paste the code just to see what it looks like.
That got frustrating. So I built Markmaid to solve this exact problem.
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Instantly render diagrams from raw Markdown + Mermaid code
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Stay in my workflow without leaving the current page
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Better understand and communicate ideas visually
Downloads
It’s on Chrome Webstore for now, and suuport nearly all versions of Chrome.
2026.06.26
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Feature: Converts selected Markdown + Mermaid code into diagrams instantly
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Pricing: Totally Free
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Download link: v1.0