Mobile Tester - Mobile-Friendly Testing Tool
You can enter your website's URL into the address bar at the top of this page (not your browser's address bar) to test a specific page to be Mobile-Friendly.
240 x 320 (small phone)
320 x 480 (iPhone)
480 x 640 (small tablet)
768 x 1024 (iPad - Portrait)
1024 x 768 (iPad - Landscape)
Note: The content width may not be pixel perfect - I have added 15px to the iframes to cater for the scrollbars