The aspect ratio determines the shape of your image. Choosing the right ratio ensures your content looks perfect for its intended use.
Ratio | Dimensions | Best For |
|---|---|---|
1:1 | Square | Social profiles, Instagram posts |
16:9 | Landscape | Presentations, YouTube thumbnails, desktop wallpapers |
9:16 | Portrait | Stories, Reels, TikTok, mobile wallpapers |
4:3 | Standard | Traditional photography, tablets |
3:4 | Portrait | Portrait photography, Pinterest |
4:5 | Instagram feed posts | |
3:2 | Classic | Classic photography format |
2:3 | Portrait | Classic portrait format |
5:4 | Medium | Medium format photography |
21:9 | Ultra-wide | Cinematic, banners, website headers |
Feed posts: 1:1 or 4:5
Stories/Reels: 9:16
Posts: 1:1 or 4:3
Cover images: 16:9
YouTube
Thumbnails: 16:9
Pins: 2:3 or 9:16
Website banners: 21:9 or 16:9 Email headers: 16:9 or 3:1 Print materials: Depends on final format, but 4:3, 3:2, or 1:1 are common
Plan ahead: Know where the image will be used before generating
Safe zones: For social media, keep key elements away from edges where cropping might occur
Multiple versions: Generate the same prompt in different ratios for cross-platform use
Outpainting: If you need a different ratio later, use the outpainting feature to extend your image
The actual pixel dimensions depend on both aspect ratio and resolution setting:
At 1K resolution (1024px base):
1:1 → 1024×1024
16:9 → 1024×576
9:16 → 576×1024
At 4K resolution (4096px base):
1:1 → 4096×4096
16:9 → 4096×2304
9:16 → 2304×4096
