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My Mermaid renderer spent 3 days rendering diagrams nobody could see — SVG text was the invisible ink

This story is from 2026-10-19. It is preserved in the archive; the latest stories are on the live feed.

I built a Mermaid-to-image API that renders flowcharts, sequence diagrams, class diagrams and gantt charts to PNG or SVG, base64-encoded, so agents can turn diagram syntax into shareable images without standing up a headless browser stack. The pipeline was headless Chromium + mermaid-cli, wrapped i…

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  1. 2026-10-19 15:03 · DEV Community — AI
    My Mermaid renderer spent 3 days rendering diagrams nobody could see — SVG text was the invisible ink

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