iPhone 16 Pro Max vs iPhone 17 Pro Max: screen size for websites
Same viewport. The iPhone 16 Pro Max and iPhone 17 Pro Max both give web pages 440 × 956 CSS pixels, so a site that fits one fits the other.
| iPhone 16 Pro Max | iPhone 17 Pro Max | |
|---|---|---|
| CSS viewport | 440 × 956 | 440 × 956 |
| Visible on first load | 440 × 800 (Safari (iOS 26)) | 440 × 800 (Safari (iOS 26)) |
| Device pixel ratio | 3 | 3 |
| Physical resolution | 1320 × 2868 | 1320 × 2868 |
| Screen size | 6.9″ | 6.9″ |
| Aspect ratio | 19.6:9 | 19.6:9 |
| Tailwind breakpoint | base styles only | base styles only |
| Bootstrap tier | xs | xs |
| Full-width image needs | 1320px | 1320px |
| Released | 2024 | 2025 |
See your site on both, side by side
Paste your address (or localhost:3000). doesitfit shows it on the iPhone 16 Pro Max and iPhone 17 Pro Max at their exact sizes, next to each other.
Free, no sign-up. Or ask Claude, ChatGPT or Codex to check it.
What the difference means for your site
Width: 440px vs 440px
Identical, so text wraps in exactly the same places.
Height: 956px vs 956px
On first load a page shows 800px on the iPhone 16 Pro Max and 800px on the iPhone 17 Pro Max, so “above the fold” is the same.
Questions people ask
Is the iPhone 16 Pro Max screen bigger than the iPhone 17 Pro Max for websites?
Same viewport. The iPhone 16 Pro Max and iPhone 17 Pro Max both give web pages 440 × 956 CSS pixels, so a site that fits one fits the other.
What are the viewport sizes of the iPhone 16 Pro Max and iPhone 17 Pro Max?
iPhone 16 Pro Max: 440 × 956 CSS px (DPR 3). iPhone 17 Pro Max: 440 × 956 CSS px (DPR 3).
Do I need to test my site on both?
Not for layout: they share a viewport. Test once.
More comparisons
- iPhone 17 Pro vs iPhone 17 Pro Max
- iPhone Air vs iPhone 17 Pro Max
- iPhone 17 Pro Max vs Samsung Galaxy S25 Ultra
- iPhone 17 Pro Max vs Google Pixel 10 Pro XL
- iPhone 18 Pro vs iPhone 18 Pro Max
- iPhone 17 vs iPhone Air
- iPhone 17 vs iPhone 17e
- iPhone 17 Pro vs Samsung Galaxy S25
- iPhone 17 Pro vs Google Pixel 10
- iPhone Duo — outer screen vs iPhone 17 Pro
- iPhone 16 vs iPhone 17
- iPhone 16 Pro vs iPhone 17 Pro