Mobile FIRST
Smartphone and tablet simulator in the browser
Mobile FIRST launched on July 10, 2023 with 207 votes, #172 of 4,347 launches that month and more than 95% of that year's launches. The site was still online in September 2026, 3 years on.
What it does
Test your website on smartphones, tablets, and more, with realistic rendering of many devices, including recent and older models of Android, iPhones, and Apple Watches. Record screencasts, capture transparent PNG, test dark mode, and more.
See any website in mobile view: simulate 81 phones and tablets, exact CSS viewport, PNG and video capture. Free Chrome extension.
Switch any page to mobile view, check your responsive web design on 81 devices, and prepare your client demos in one click. Without leaving your browser. One click to switch to mobile view, one click to return to desktop. The rest behaves like on a real phone: touch gestures, zoom, landscape mode, PWA. Display multiple devices side by side and test them simultaneously. Single navigation, all breakpoints checked at once. WEBM, GIF, or MP4 for your demos and tutorials, recorded directly from the simulator, with or without a camera. High-definition screenshots with a transparent background, ready for a presentation, mockup, or client email. Finger gestures are natively simulated: inertia,…from webmobilefirst.com
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