VertaaUX scores each page across seven dimensions including usability, information architecture, WCAG 2.2 accessibility, performance and mobile responsiveness, returning a 0-100 score per dimension with prioritised fixes. It is unusually well plumbed for engineering workflows, with a REST API, CLI, GitHub Action, VS Code extension, MCP server and Chrome extension. Audits are free to run without signup, but no paid pricing is published.