Aspect Ratio Guide for AI Images & Social Media
Not sure which aspect ratio to generate? This guide maps the common ratios to their 4K pixel dimensions and the platforms they fit best — so your images land crisp and uncropped.
| Ratio | 4K dimensions | Orientation | Best for |
|---|---|---|---|
| 1:1 | 4096 × 4096 | Square | Instagram feed, product catalogs, profile-safe crops |
| 4:5 | 3277 × 4096 | Portrait | Instagram feed (max height), e-commerce product pages |
| 2:3 | 2731 × 4096 | Portrait | Pinterest, posters, print |
| 3:4 | 3072 × 4096 | Portrait | Portrait product shots, Pinterest |
| 9:16 | 2304 × 4096 | Portrait | Instagram & TikTok Stories/Reels, phone wallpaper |
| 16:9 | 4096 × 2304 | Landscape | YouTube, website heroes, presentations, ads |
| 3:2 | 4096 × 2731 | Landscape | Classic photography, blog headers, landscape print |
How to choose an aspect ratio
Start from where the image will live. Vertical 9:16 fills a phone screen for Stories and Reels; 4:5 takes the most feed height on Instagram without cropping; 1:1 is the safest all-rounder for catalogs and profiles; 16:9 suits websites, YouTube and slides. Generate at the target ratio from the start rather than cropping later — you keep full resolution and the composition stays intentional.
Frequently asked questions
What's the best aspect ratio for Instagram?+
4:5 gives the most feed height without cropping, 1:1 is the safe square, and 9:16 is for Stories and Reels.
Should I crop or generate at the target ratio?+
Generate at the target ratio from the start — you keep full resolution and control the composition, instead of losing pixels and framing to a later crop.
Can I generate any of these in 4K?+
Yes — Oxava outputs up to native 4K across ratios, with optional upscaling beyond that.