Markdown Studio
Markdown editor built for the AI workflow era
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Sahitya Pasnoor

Markdown Studio - Zero-knowledge markdown editor with AI Battle Mode

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Markdown Studio
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Markdown Studio is a zero-knowledge markdown editor and AI prompt engineering workspace. Compare AI models side-by-side in Battle Mode, count tokens for 20+ models, use smart variables with presets, sync to GitHub, and lock outputs with PromptOps deterministic execution. 187 features including Mermaid diagrams, KaTeX math, PDF/HTML/JSON export, audit logging, and PII scanning. Available in 8 languages. No login, no servers, no tracking cookies. Your data never leaves your device.

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Sahitya Pasnoor
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Hey Product Hunt! 👋 I built Markdown Studio because I was frustrated switching between my markdown editor, ChatGPT, and Claude just to iterate on prompts. The core idea: your markdown IS your prompt. Write it, fill in variables, then run it against GPT-4o, Claude, Gemini, or Llama side-by-side in Battle Mode to see which model handles it best. What makes it different: - Zero-knowledge architecture — there are no servers. Your content, API keys, and data never leave your browser. This isn't a privacy policy, it's an engineering constraint. - Battle Mode — run the same prompt against 2+ models simultaneously, compare streaming responses, see token costs, and rate the outputs with stars. - PromptOps — lock your prompt configuration, certify outputs with SHA-256 hashes, and detect drift when you re-run. Think version control for AI outputs. - 187 features — full CodeMirror 6 editor, Mermaid diagrams, KaTeX math, GitHub sync, audit logging, PII scanning, variables with presets, and 8 languages. It's completely free. No login required. I'd love to hear what you think — especially what workflows you'd want to see next!