Resize an image to 16:9 aspect ratio.
Drop your photos and download them in the 16:9 aspect ratio. Each photo keeps all its pixels at their own size; padding is added on the short side until the shape is 16:9, 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 16:9.
Lines from Herofab's platform guides that name the 16:9 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 |
|---|---|---|---|
| eBay | Recommended | About 1,600 × 1,600 pixels; 1:1 or 16:9 aspect ratios look best | 10 October 2026 |
| 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 |
| 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 |
| YouTube | Aspect ratio | 16:9 recommended for video thumbnails, 9:16 for Shorts and 1:1 for podcast playlists | 12 October 2026 |
| YouTube | Channel banner | Minimum upload dimension of 2,048 × 1,152 pixels at 16:9; 2,560 × 1,440 pixels recommended, especially for TV | 12 October 2026 |
| Walmart Connect | Sponsored Brands logo | Minimum image size 300 × 180 pixels, in landscape, square or portrait shapes from 16:9 to 9:16, on a transparent or white background; maximum file size 1 MB, 200 KB recommended | 12 October 2026 |
| Walmart Connect | Brand Shop hero banner | Image must be at least 1,676 × 940 pixels in a 16:9 aspect ratio, with a maximum file size of 10 MB; an image that is not 16:9 returns an error, and a logo added to the banner must be 1:1 | 12 October 2026 |
| Walmart Connect | Gallery | Delivery dimensions: desktop web image 788 × 444 (16:9), app and mobile web image 432 × 242 (16:9); logo 150 × 150 | 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 | Desktop | Recommended resolutions are 1,440 × 1,080 pixels 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 |
| 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 |
| Kickstarter | Spotlight image | The main Spotlight image is resized to a maximum width of 700 pixels and a maximum height of 800 pixels; cropping it to a 16:9 aspect ratio before uploading is recommended | 12 October 2026 |
From a phone photo to 16:9.
Common 12-megapixel phone photo shapes brought to 16:9: 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 | 5,376 × 3,024 px | ↔ 672 + 672 px |
| 3,024 × 4,032 · 3:4 | 7,168 × 4,032 px | ↔ 2,072 + 2,072 px |
| 4,032 × 2,268 · 16:9 | 4,032 × 2,268 px | — |
| 2,268 × 4,032 · 9:16 | 7,168 × 4,032 px | ↔ 2,450 + 2,450 px |
| 3,024 × 3,024 · 1:1 | 5,376 × 3,024 px | ↔ 1,176 + 1,176 px |
16:9 in numbers.
- Aspect ratio
- 16:9
- Width ÷ height
- 1.778
- Orientation
- Landscape
Other aspect ratios.
16:9, answered.
Which platforms ask for the 16:9 aspect ratio?
eBay, Allegro, Wix, YouTube, Walmart Connect, Reddit Ads, Taboola, and Kickstarter. 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 16:9?
It depends on the photo: its pixels stay and padding is added until the shape is 16:9. A 4,032 × 3,024 px phone photo becomes 5,376 × 3,024 px, with 672 px of padding on the left and 672 px on the right.
Is the photo scaled or cropped when resizing to 16:9?
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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