Common aspect ratios
| Ratio | Used for | Example sizes |
|---|---|---|
| 16:9 | YouTube, TVs, laptops, PPT | 1280×720, 1920×1080, 3840×2160 |
| 9:16 | Instagram Reels, Stories, Shorts, WhatsApp status | 1080×1920 |
| 4:5 | Instagram portrait post | 1080×1350 |
| 1:1 | Instagram square, profile photos | 1080×1080 |
| 4:3 | Older screens, iPad, many phone photos | 1024×768, 4000×3000 |
| 3:2 | DSLR photos, 6×4 prints | 6000×4000 |
| 21:9 | Ultrawide monitors, cinema | 2560×1080, 3440×1440 |
How to resize without stretching
New height = New width × (Original height ÷ Original width)Example: a 1920×1080 image resized to 1280 wide → 1280 × 1080 ÷ 1920 = 720 high. Type a new width or height above and the other side fills in automatically.