Every site or method I could find either had a very small selection or it was a pain to change resolutions.
No registration required. I don't want your email, just toss me a few bucks if this has helped you. The domain alone costs $30/year.

If you can't donate, please at least check out (and maybe support) my other projects:

Horror Makes Us Happy
Recovery Book Press
My Soundcloud

If you really need a resolution added below you can reach me via any of the links above.
This page was also made with the help of my roommate, David J Eddy.

NOTE #1: This will attempt to load the requested website 30+ times. If you're loading a resource-heavy page please be patient.

NOTE #2: If your screen's DPI doesn't match that of the phone then the display below will not be accurate. I plan to make some notes next to each model to make it easier for you to know which phones have which DPI settings.

NOTE #3: If the iframes aren't loading (or if you're thinking of sending me a suggestion) view my FAQ, to-do list, and a list of suggestions that have already been made by clicking here.

Pixel Size 828 x 1792, Viewport 414 x 896 - iPhone XR, iPhone XS Max

Pixel Size 1125 x 2436, Viewport 375 x 812 - iPhone XS, iPhone X

Pixel Size 1080 x 1920, Viewport 414 x 736 - iPhone 8 Plus, iPhone 7 Plus, iPhone 6 Plus/6S Plus

Pixel Size 750 x 1334, Viewport 375 x 667 - iPhone 8, iPhone 7, iPhone 6/6S

Pixel Size 640 x 1136, Viewport 320 x 568 - iPhone 5, iPod Touch

Pixel Size 2048 x 2732, Viewport 1024 x 1366 - iPad Pro

Pixel Size 1536 x 2048, Viewport 768 x 1024 - iPad Third & Fourth Generation, iPad Air 1 & 2, iPad Mini 2 & 3, iPad Mini

Pixel Size 1440 x 2560, Viewport 412 x 732 - Nexus 6P, Nexus 5X, Google Pixel 2 XL, Google Pixel XL, Google Pixel

Pixel Size 1440 x 2960, Viewport 412 x 847 - Google Pixel 3 XL

Pixel Size 1080 x 2160, Viewport 412 x 824 - Google Pixel 3

Pixel Size 1440 x 2960, Viewport 360 x 740 - Samsung Galaxy Note 9, Samsung Galaxy S9+, Samsung Galaxy S9, Samsung Galaxy S8+, Samsung Galaxy S8

Pixel Size 1440 x 2560, Viewport 480 x 853 - Samsung Galaxy Note 5, LG G5, One Plus 3

Pixel Size 1440 x 2560, Viewport 360 x 640 - Samsung Galaxy S7 Edge, Samsung Galaxy S7

Pixel Size 1536 x 2048, Viewport 768 x 1024 - Nexus 9

Pixel Size 1200 x 1920, Viewport 600 x 960 - Nexus 7 (2013)

Pixel Size 800 x 1280, Viewport 800 x 1280 - Samsung Galaxy Tab 10

Pixel Size 2560 x 1700, Viewport 1280 x 850 - Chromebook Pixel