synthux

AI-powered UX audit in your browser. Evaluate any page with synthetic user profiles and Nielsen's 10 heuristics using local AI.

Analyze any website's UX quality using AI — right from your browser. synthux evaluates web pages using Nielsen's 10 Usability Heuristics and synthetic user profiles, powered by local AI (Ollama). All processing happens on your machine. No data leaves your browser. No signup. No API costs. ⸻ FEATURES ⸻ Local AI Analysis Run Ollama with Gemma 4, Qwen, Llama, or any model you prefer. Everything stays on your machine. Nielsen's 10 Heuristics Industry-standard UX evaluation framework with per-heuristic scoring (0–100). Synthetic User Profiles Evaluate as a first-time visitor, power user, or accessibility user — each with different expectations. Accessibility Audit WCAG contrast checks, alt text validation, heading structure, and keyboard navigation analysis. Detailed Scoring Overall UX score (0–100) with breakdowns per heuristic and actionable recommendations. Markdown Export Download reports as .md files — perfect for Notion, GitHub Issues, or design handoffs. Quick & Deep Modes Fast 3-heuristic scan or full 10-heuristic deep analysis. 100% Private Your data never leaves your machine. Open source under MIT License. ⸻ HOW IT WORKS ⸻ 1. Install Ollama (ollama.com) or LM Studio and pull a model 2. Enable Chrome extension access (see Setup Guide in Settings) 3. Navigate to any website 4. Open synthux Side Panel 5. Click "Analyze Page" 6. View results and export as Markdown ⸻ REQUIREMENTS ⸻ • Ollama or LM Studio running locally • A language model (Gemma 4, Qwen, Llama, etc.) • Chrome 116+ (Side Panel API) ⸻ OPEN SOURCE ⸻ synthux is free and open source: https://github.com/synthuxapp/synthux https://synthux.app Found a bug? Have a feature request? Open an issue on GitHub.