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Work · September 25, 2025

Plantdiagrams

Hi HN! I couldn’t find a truly user-friendly PlantUML editor, so I set out to build one. PlantDiagrams lets you describe a diagram in plain English; it generates the PlantUML and renders it instantly. The goal is to shorten the path from idea → diagram without fighting the editor. Tech: - Next.js / Supabase / FLy.io / Vercel Highlights - Natural-language to PlantUML with live preview - Export diagrams (SVG/PNG/TXT) - Organize work with Projects - Share via link; optional comments for review - Sample gallery to open and tweak examples Try it:…

Plantdiagrams launched on September 25, 2025 with 16 votes, #667 of 8,160 launches that month and more than 75% of that year's launches. The site was still online in September 2026, 1 year on.

What it does

Creating diagrams has never been easier. Generate diagrams in seconds with a single prompt and fine-tune using standard PlantUML. Share your work directly on the platform, receive feedback, organize using projects and export in one click to SVG, PNG and TXT.

Free online PlantUML editor with AI-powered diagram generation. Create, edit, and share UML diagrams instantly with live preview. No installation required.

Plantdiagrams is an AI-powered PlantUML editor that transforms your ideas effortlessly into professional diagrams. Let AI assist you with intelligent code suggestions, auto-completion, and smart error detection for effortless PlantUML creation. Start quickly with pre-built diagram templates. From sequence diagrams to architecture patterns. Export your diagrams in SVG, PNG, or TXT formats. Download and use them anywhere you need. Share diagrams and projects with a single click. Generate public links for anyone to view your work. Structure and organize your diagrams into projects. Keep related diagrams together for better workflow. Others can add comments and feedback directly on diagrams.…from plantdiagrams.com

In the maker’s words, at launch

Hi HN! I couldn’t find a truly user-friendly PlantUML editor, so I set out to build one. PlantDiagrams lets you describe a diagram in plain English; it generates the PlantUML and renders it instantly. The goal is to shorten the path from idea → diagram without fighting the editor. Tech: - Next.js / Supabase…

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