10 Aspect Ratios · Let AI Pick the Best Size
Just tell AI which platform you're running on — it picks the best ratio. This article lists all 10 supported ratios and their typical uses, so you have a reference.
Core idea: you don't need to memorize "which platform uses which ratio" — just tell AI the platform name (Meta / TikTok / Google) and it auto-matches the best ratio. The table below is just so you have a reference.
All 10 supported ratios
| Ratio | Orientation | Typical use |
|---|---|---|
| 1:1 | Square | Google Display, Instagram feed posts |
| 4:5 | Vertical | Meta Feed ads (recommended) |
| 9:16 | Tall vertical | TikTok, Stories, Reels |
| 16:9 | Horizontal | Google Display, YouTube banners |
| 3:2 | Horizontal | Classic photography, blog feature images |
| 2:3 | Vertical | Vertical posters, Pinterest |
| 4:3 | Horizontal | Standard photos, slide deck images |
| 3:4 | Vertical | Product detail pages, vertical photos |
| 5:4 | Horizontal | Social media display |
| 21:9 | Ultra-wide | Website hero banners |
Visual comparison (one look and you get it)
Not sure which to pick? A decision tree
- Don't know → 1:1 (most universal, works on every platform)
- Short video / Stories → 9:16 (mobile vertical, immersive)
- E-commerce hero → 1:1 (fills the square slot on product list pages)
- Brand banner / website hero → 16:9
- Meta link ad share card → 1.91:1
For your first try: pick 1:1 — most universal, hardest to mess up. Need Stories or TikTok? Use 9:16.
Number of images per run
A single run generates up to 4 images. For A/B testing, generate 3-4 variations of the same concept at once and run the best one.
Pro move: generate 4 images of one concept, run them, pick the winner; once the winning creative outperforms, ask AI to "generate 4 more variations in the winner's direction" — the fastest creative iteration loop.
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