PromptLens — Image to AI Prompt

Turn web or local images into structured JSON prompts for AI image generators. Powered by OpenRouter.

PromptLens — Convert any image into a structured AI prompt. PromptLens is a lightweight utility designed for digital artists, creators, and AI enthusiasts who need to translate visual content into machine-readable data. Integrated directly into your browser, PromptLens can analyze images in two ways: • Right-click any image on any website • Click the extension icon to upload, drag-and-drop, or paste your own local images, including screenshots, personal reference images, and photos transferred from your phone It generates a clean JSON prompt ready for AI image generators and LLMs. Main Features: ⚡ Instant Access — Right-click any image on any website, no extra steps. 🖼️ Local Image Upload — Upload your own images directly from your computer, or drag-and-drop / paste them into the extension popup. 📋 Structured Output — Clean JSON with style, subject, setting, lighting, mood, colors, tags, and negative prompt. 🔌 OpenRouter Powered — Access vision AI models through your own OpenRouter API key, usually at a very low cost per image. 🤖 Smart Model Routing — OpenRouter can automatically select an available vision model for each request. No manual model configuration needed. 🔒 Privacy-First — Your API key stays in your browser. No middleman servers, ever. Images are sent directly to OpenRouter only when you explicitly analyze them. How to Use: 1. Install PromptLens and enter your OpenRouter API key in the options page. 2. Right-click any image on any website and select "PromptLens — Generate JSON Prompt". 3. Or click the extension icon to upload, drag-and-drop, or paste your own image. 4. The JSON is copied to your clipboard — paste it anywhere. Note: The AI model used may vary per request based on OpenRouter's automatic routing. Results may differ slightly between analyses of the same image. Requirements: A free or paid OpenRouter account and API key (openrouter.ai).