Markdown Studio is a free editor designed for the AI workflow era — draft prompts, format context, and prep content for ChatGPT, Claude, and other LLMs. ✓ Real-time token counting across GPT-4, Claude & more ✓ Live preview that syncs with your cursor ✓ Auto-save version history every 5 minutes ✓ Smart copy optimized for AI chats ✓ Dark mode, multi-tab, PDF/HTML export 100% private. No accounts. No tracking. Your data never leaves your browser. Completely free.
Hey Product Hunt!
I built Markdown Studio because I noticed something: we're all writing more markdown than ever — but not for READMEs anymore.
We're writing prompts. System instructions. Context dumps for Claude and ChatGPT. RAG documents. API documentation that LLMs will consume.
The problem? Traditional markdown editors weren't built for this:
- "Will this fit in GPT-4's context window?" (No idea)
- "How many tokens is my system prompt?" (Copy to tokenizer, paste back, repeat)
- "Did I lose that perfect prompt version from yesterday?" (Yes)
So I built what I needed:
→ Token counter that updates as you type (GPT-4, Claude, all models)
→ Version history that auto-saves every 5 minutes
→ Copy button that strips formatting for clean AI input
→ Templates for code reviews, bug reports, chain-of-thought prompts
And because prompts often contain sensitive data — API keys, internal docs, proprietary logic — everything stays in your browser. No accounts. No cloud. No tracking.
What's your markdown + AI workflow? Building features based on real use cases!
