iPhone 13 Pro Max screen size
The iPhone 13 Pro Max renders websites at 428×926 CSS pixels in portrait and 926×428 in landscape. It shares the exact same viewport as the iPhone 14 Plus, iPhone 12 Pro Max, so one test covers them all.
Viewport specs
| CSS viewport (portrait) | 428 × 926 px |
| CSS viewport (landscape) | 926 × 428 px |
| Aspect ratio | 0.462:1 |
| Breakpoint category | mobile |
| Device type | phone |
| Brand | Apple |
CSS media query for iPhone 13 Pro Max
/* iPhone 13 Pro Max — portrait */
@media (max-width: 428px) {
/* your styles */
}
/* iPhone 13 Pro Max — landscape */
@media (max-width: 926px) and (orientation: landscape) {
/* your styles */
}Testing tips for iPhone 13 Pro Max
Viewports this narrow are where layouts most often break: check that nothing scrolls sideways, buttons are at least 44px tall, and body text is 16px or larger.
Compare it against a tablet and a desktop width in the same view to catch breakpoint jumps — Responsivly's multi-view does this in one click.
FAQ
What is the iPhone 13 Pro Max viewport size?
The iPhone 13 Pro Max has a CSS viewport of 428×926 pixels in portrait orientation and 926×428 pixels in landscape.
What media query targets the iPhone 13 Pro Max?
Use @media (max-width: 428px) for portrait styles, or @media (min-width: 428px) and (max-width: 428px) to target this exact width.
How do I test my website on the iPhone 13 Pro Max?
Open Responsivly, paste your URL and pick iPhone 13 Pro Max from the device list — it renders your site at 428×926 for free, no signup.