PromptComposer

⚡ a lean, local-first prompt crafting tool with symbolic file aliasing and real-time preview. built for hackers, prompt engineers, and LLM nerds who want clarity before compute.

🔥 Features

• 🗃 drag & drop file upload with symbolic aliases (e.g. {{test}})
• 🔣 manual alias creation for custom symbols and reusable text snippets
• 🖊️ inline alias editing for both files and manual aliases
• ✨ intelligent highlighting with color-coded valid, invalid, and repeated aliases
• ✍️ real-time prompt editing with instant alias resolution and preview
• 🔍 error detection for invalid aliases with visual feedback
• 📊 character + token count estimation (1 token ≈ 4 chars)
• 💾 workflow save/load to preserve your entire workspace setup
• 🌙 dark mode support for comfortable night-time work
• 🔄 session persistence via localStorage
• 📋 copy or download resolved prompt in one click

🧪 Try It Out

GitHub Pages: Try it out here: https://joenorton.github.io/promptcomposer/

— or host it locally:

git clone https://github.com/joenorton/promptcomposer.git
cd promptcomposer
python -m http.server 8000

Then open: http://localhost:8000

🧠 Tech Stack

• Alpine.js — reactive UI, no bloat
• Vanilla HTML/CSS/JS — no build step, just open and go

📁 Structure

index.html      → main UI
app.js          → logic & state (Alpine.js)
styles.css      → minimal, clean styling

📜 License

MIT — do whatever, just don't claim you wrote it.
(c) @joenorton