The recommended 쇼핑몰 Product detail page (Smart Store / Coupang) spec is 860×3000 px (0.29:1). Detail page width: 860px for Smart Store, 780px for Coupang. Height is free (split long pages). Use "Fit width" so height keeps its ratio.
| Platform | Placement | Recommended | Ratio | |
|---|---|---|---|---|
| 인스타그램 | Instagram feed (square) | 1080×1080 | 1:1 | Resize |
| 인스타그램 | Instagram feed (portrait 4:5) | 1080×1350 | 4:5 | Resize |
| 인스타그램 | Instagram feed (landscape 1.91:1) | 1080×566 | 1.91:1 | Resize |
| 인스타그램 | Instagram Story / Reels cover | 1080×1920 | 9:16 | Resize |
| 인스타그램 | Instagram profile picture | 320×320 | 1:1 | Resize |
| 인스타그램 | Instagram ad (feed 1:1) | 1080×1080 | 1:1 | Resize |
| 유튜브 | YouTube thumbnail | 1280×720 | 16:9 | Resize |
| 유튜브 | YouTube channel banner (channel art) | 2560×1440 | 16:9 | Resize |
"Fill" center-crops when the ratio differs. "Fit" pads with the chosen color. "Fit width" keeps the height ratio, for detail pages.
Drag the preview of a "Fill" result to move the crop.
JPG, PNG or WebP, quality 50–100. Each result card shows size and weight.
Select several files to convert them to the same spec and download with "Save all".
860×3000 px, ratio 0.29:1. Detail page width: 860px for Smart Store, 780px for Coupang. Height is free (split long pages). Use "Fit width" so height keeps its ratio.
Choose "Fit (padding)" to avoid cropping; with "Fill" you can drag the preview to move the crop.
Upscaling beyond the original blurs. Use the largest original you have; when downsizing, quality 90+ is visually lossless.