Resize an image to 4:3 aspect ratio.
Drop your photos and download them in the 4:3 aspect ratio. Each photo keeps all its pixels at their own size; padding is added on the short side until the shape is 4:3, so nothing is cropped, enlarged or reduced. 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 4:3.
Lines from Herofab's platform guides that name the 4:3 aspect ratio, whether as a requirement, a recommendation or one of several accepted shapes. Each row links to the guide and its official source.
| Platform | Rule | What the guide says | Read |
|---|---|---|---|
| Allegro | File | JPG, JPEG or PNG (WEBP also through the API or a file); any proportions, such as 1:1, 4:3 or 16:9; only the sRGB profile for full colour fidelity | 10 October 2026 |
| Ricardo | Crop | Ricardo crops pictures to the 4:3 format, so horizontal photos look better in the search results | 27 September 2026 |
| Wix | Aspect ratio | 16:9, 3:2, 4:3, 1:1, 3:4, 2:3 or 9:16; 1:1 is the recommended ratio for mobile | 11 October 2026 |
| Ecwid | Aspect ratio | Ecwid names 1:1, 3:4, 4:3, 2:3 and 3:2 as the most appealing proportions, and asks for one aspect ratio and orientation across a product's gallery | 11 October 2026 |
| SHOPLINE | Aspect ratio | Product images can be displayed as square (1:1), vertical (2:3), horizontal (4:3) or in their original ratio; 2:3 is the recommended ratio and a consistent ratio across all product images is advised | 12 October 2026 |
| Reddit Ads | Recommended | Landscape 4:3 at 1,440 × 1,080 pixels is the recommended cross-device resolution for an image ad, so a single image serves multiple devices, placements and view modes | 12 October 2026 |
| Reddit Ads | Mobile | Recommended resolutions are square 1:1 at 1,080 × 1,080, portrait 3:4 at 1,080 × 1,440, portrait 4:5 at 1,080 × 1,350, landscape 4:3 at 1,440 × 1,080 and landscape 16:9 at 1,920 × 1,080 pixels | 12 October 2026 |
| Reddit Ads | Carousel | Recommended across devices: portrait 4:5 at 1,200 × 1,500, landscape 4:3 at 1,440 × 1,080 or landscape 16:9 at 1,920 × 1,080 pixels; square 1:1 at 1,200 × 1,200 pixels is also listed for mobile; using the same aspect ratio for all images is strongly recommended | 12 October 2026 |
| Reddit Ads | Thumbnail | Recommended landscape 4:3 at 400 × 300 pixels; square 1:1 at 300 × 300 and landscape 16:9 at 400 × 225 pixels are acceptable; maximum file size 3 MB; shown only in conversation placement and compact view | 12 October 2026 |
| Weebly | Aspect ratio | One ratio setting applies to all item photos; shapes are square (1:1), portrait (2:3 or 3:4) and landscape (3:2 or 4:3), and mixing them leads to odd cropping | 12 October 2026 |
| Taboola | Aspect ratio | 16:9 preferred, with 4:3 and 1:1 also listed; the ad preview shows 16:9, 6:5, 2:1, 1:1 and 1.91:1 crops | 12 October 2026 |
From a phone photo to 4:3.
Common 12-megapixel phone photo shapes brought to 4:3: the size of the downloaded file and the padding added on each side (↔ left + right, ↕ top + bottom). The photo keeps its own pixels, so the output size follows the photo. The tool above uses the same calculation.
| Phone photo | Output size | Padding |
|---|---|---|
| 4,032 × 3,024 · 4:3 | 4,032 × 3,024 px | — |
| 3,024 × 4,032 · 3:4 | 5,376 × 4,032 px | ↔ 1,176 + 1,176 px |
| 4,032 × 2,268 · 16:9 | 4,032 × 3,024 px | ↕ 378 + 378 px |
| 2,268 × 4,032 · 9:16 | 5,376 × 4,032 px | ↔ 1,554 + 1,554 px |
| 3,024 × 3,024 · 1:1 | 4,032 × 3,024 px | ↔ 504 + 504 px |
4:3 in numbers.
- Aspect ratio
- 4:3
- Width ÷ height
- 1.333
- Orientation
- Landscape
Other aspect ratios.
4:3, answered.
Which platforms ask for the 4:3 aspect ratio?
Allegro, Ricardo, Wix, Ecwid, SHOPLINE, Reddit Ads, Weebly, and Taboola. The table on this page gives each rule in full and links to the platform's guide.
What size is the image after resizing to 4:3?
It depends on the photo: its pixels stay and padding is added until the shape is 4:3. A 3,024 × 4,032 px phone photo becomes 5,376 × 4,032 px, with 1,176 px of padding on the left and 1,176 px on the right.
Is the photo scaled or cropped when resizing to 4:3?
Neither. The photo keeps every pixel at its original size and the padding colour fills the added area, so the whole product stays in frame and a small photo is not blurred by enlarging.
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