Responsive Tester

Test responsive websites on multiple mobile, tablet and desktop screens side by side. Scroll, clicks and form inputs sync in real time across every screen.

• Phones, tablets and desktops in one view
• Real-time sync for scroll, click and form inputs
• Works with Claude, Cursor, Codex, Gemini CLI and Windsurf via MCP: ask in plain English, get pass / fail per device