Etsy image size is only half the problem. Cropping is the other half.
The safest listing image keeps its subject clear at high resolution and leaves enough breathing room for multiple thumbnail shapes.
The practical baseline
Use a high-resolution horizontal or landscape source, keep the product near the center, and leave deliberate margin around important text or product edges. Etsy’s own guidance warns that listing images can appear in square, portrait, and landscape thumbnail views.
Supported shop image types include JPG, GIF, PNG, SVG and HEIC, though animated GIF and transparent PNG behavior has limitations. For a predictable marketplace export, this MVP outputs an sRGB-friendly JPEG.
Why a single fixed ratio is misleading
A seller may see a different crop in search, shop, recommendation, and email contexts. Instead of claiming one “perfect” ratio, the tool previews several likely frames and overlays an inner safe area.