Resize an image to 400 × 400 px.
Drop your photos and download them at exactly 400 × 400 pixels. Each photo is fitted inside that size and padded, so the product is never cut. It runs in your browser; nothing is uploaded.
Choose the size.
Sizes come from each marketplace's own help pages, summarised in the guides (checked 24 September 2026).
Who asks for 400 × 400 px.
Lines from Herofab's platform guides that name 400 × 400 px, whether as a recommendation, a minimum or a limit. Each row links to the guide and its official source.
| Platform | Rule | What the guide says | Read |
|---|---|---|---|
| Heureka | Clothing and shoes | Heureka.cz's fashion conditions require a quality image in the matching colour for every colour variant and recommend 160,000 pixels (about 400 × 400) or more; clothing should not be shown folded or hung but ideally on a figure, and a shoe image should show only the shoes | 10 October 2026 |
| Amazon Brand Store | Brand logo | At least 400 × 400 pixels, up to 5 MB | 12 October 2026 |
| Shopware | Thumbnails | Three thumbnail sizes are generated by default for every uploaded image: 400 × 400, 800 × 800 and 1,920 × 1,920 pixels | 12 October 2026 |
| Etsy shop banner | Profile photo | Recommended size 400 × 400 pixels | 12 October 2026 |
| Amazon Ads | Logo | 1:1 aspect ratio with a minimum size of 400 × 400 pixels for component-based creative; a brand logo must be the registered logo and fill the entire image or sit on a white or transparent background | 12 October 2026 |
| Orderchamp | Brand images | Logo minimum 400 × 400 pixels (1:1), thumbnail minimum 400 × 400 pixels (1:1), founder picture and 3–8 inspirational images minimum 870 × 840 pixels | 12 October 2026 |
| Fruugo | Minimum | 400 × 400 pixels; provide the highest resolution available | 12 October 2026 |
From a phone photo to 400 × 400 px.
Common 12-megapixel phone photo shapes fitted inside 400 × 400 px: how much each is scaled, the area the photo fills and the padding added on each side (↔ left + right, ↕ top + bottom). The tool above uses the same calculation.
| Phone photo | Scale | Photo area | Padding |
|---|---|---|---|
| 4,032 × 3,024 · 4:3 | 9.9% | 400 × 300 px | ↕ 50 + 50 px |
| 3,024 × 4,032 · 3:4 | 9.9% | 300 × 400 px | ↔ 50 + 50 px |
| 4,032 × 2,268 · 16:9 | 9.9% | 400 × 225 px | ↕ 88 + 87 px |
| 2,268 × 4,032 · 9:16 | 9.9% | 225 × 400 px | ↔ 88 + 87 px |
| 3,024 × 3,024 · 1:1 | 13.2% | 400 × 400 px | — |
400 × 400 px in numbers.
- Aspect ratio
- 1:1
- Megapixels
- 0.16
- Print size at 300 dpi
- 3.4 × 3.4 cm · 1.33 × 1.33 in
Other sizes.
400 × 400 px, answered.
Which platforms ask for 400 × 400 px?
Heureka, Amazon Brand Store, Shopware, Etsy shop banner, Amazon Ads, Orderchamp, and Fruugo. The table on this page gives each rule in full and links to the platform's guide.
What aspect ratio is 400 × 400 px?
1:1. The image has 0.16 megapixels and prints at 3.4 × 3.4 cm (1.33 × 1.33 in) at 300 dpi.
Is the product cropped when resizing for 400 × 400 px?
No. The photo is scaled to fit inside the target size and the remaining space is filled with the padding colour, so the whole product stays in frame.
Your next collection, shot this week.
20 credits at sign-up, no card required. Images made with free credits carry a watermark.