# synthux > AI-powered UX audit in your browser. Open source. ## What is synthux? synthux is an open-source Chrome extension that evaluates web pages using synthetic user profiles and Nielsen's 10 Usability Heuristics — powered by local AI (Ollama or LM Studio). All analysis runs locally on the user's machine. No data is sent to external servers. ## Key Features - Local AI Analysis via Ollama or LM Studio (Gemma, Qwen, Llama, and more) - Nielsen's 10 Usability Heuristics evaluation - 3 Synthetic User Profiles: First-Time Visitor, Power User, Accessibility User - Automated accessibility audit (WCAG checks) - 0-100 scoring per heuristic with actionable recommendations - Quick mode (3 heuristics) and Deep mode (10 heuristics) - Markdown export for reports - 100% private — no telemetry, no analytics, no data collection ## Technical Stack - Chrome Extension (Manifest V3) - Lit Web Components - Ollama local AI runtime - esbuild bundler - MIT License ## Links - Website: https://synthux.app - GitHub: https://github.com/synthuxapp/synthux - Documentation: https://github.com/synthuxapp/synthux/blob/main/docs/getting-started.md - Privacy Policy: https://github.com/synthuxapp/synthux/blob/main/PRIVACY.md - Security Policy: https://github.com/synthuxapp/synthux/blob/main/SECURITY.md - Changelog: https://github.com/synthuxapp/synthux/blob/main/CHANGELOG.md ## Contact - Issues: https://github.com/synthuxapp/synthux/issues - Contributing: https://github.com/synthuxapp/synthux/blob/main/docs/CONTRIBUTING.md