PromptBook is a high-performance, privacy-focused workspace for managing, testing, and customizing your AI LLM prompts. Designed with a stunning glassmorphism aesthetic and built for true data ownership.
- Direct File Persistence: Your prompts are saved directly to a
prompt.jsonfile on your local disk using the File System Access API. - Smart Auto-Sync: The app uses IndexedDB to remember your local file handle, automatically resuming sync across browser reloads.
- Zero-Data Architecture: The application is a pure engine; your data never resides in the HTML file itself, only in your controlled local storage.
- Template Power: Use
{{variable}}syntax to create dynamic placeholders in your prompts. - Real-time Filler: The app automatically detects variables and generates an interactive input grid in the editor.
- Verified Injection: See your actual values injected into the preview in real-time before you copy.
Switch between four curated visual aesthetics tailored for any environment:
- Aura (Classic): The signature purple/indigo dark mode with glassmorphism.
- Terminal (Neon): High-contrast green-on-black for the power-user vibe.
- Nord (Arctic): A soft, frosty blue palette designed for long focus sessions.
- Paper (Light): A clean, minimalist light theme for high-productivity daytime work.
- Instant Preview: Live Markdown rendering as you type.
- IDE-Grade Code Blocks: Beautifully styled code snippets with language headers and syntax separation.
- Unified Rendering: Consistent Markdown experience across the grid view and the full-screen editor.
- Core: Vanilla HTML5, CSS3 (Variables & Grid), Modern JavaScript (ES6+)
- Storage: File System Access API, IndexedDB, LocalStorage
- Rendering: Marked.js for robust GFM parsing
- Fonts: 'Outfit' & 'JetBrains Mono' via Google Fonts
- Open
index.htmlin any modern Chromium-based browser (Chrome, Edge, Brave). - Connect JSON: Click the "Connect JSON" button in the sidebar.
- Choose Folder: Select a folder on your computer and name the file
prompt.json. - Start Creating: Add your first prompt and watch it instantly persist to your local disk!
Arjun Trivedi (Arjuntrivedi42@yahoo.com)
PromptBook: Your data. Your privacy. Your prompts. Perfectly in sync.