Resize an image to 1:1 aspect ratio.
Drop your photos and download them in the 1:1 aspect ratio. Each photo keeps all its pixels at their own size; padding is added on the short side until the shape is 1:1, so nothing is cropped, enlarged or reduced. It runs in your browser; nothing is uploaded.
Free tool · first use without sign-up
Choose the size.
Sizes come from each marketplace's own help pages, summarised in the guides (checked 24 September 2026).
Platforms
Who asks for 1:1.
Lines from Herofab's platform guides that name the 1:1 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 |
| Walmart | Size | 2,200 × 2,200 pixels, square (1:1) | 10 October 2026 |
| Faire | Logo | A 1:1 ratio is recommended; optimal size 248 × 248 pixels | 8 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 |
| WooCommerce | Crop | Catalogue thumbnails can be set to 1:1, to a custom ratio or left uncropped; uncropped images can appear in uneven sizes | 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 |
| Facebook & Instagram Shop | Size | At least 500 × 500 pixels; in Shops on Facebook and Instagram images are displayed square (1:1), and 1,024 × 1,024 pixels is recommended | 11 October 2026 |
| Facebook & Instagram Shop | Consistency | All images in the same aspect ratio, 1:1 or 4:5, to prevent automatic adjustments | 11 October 2026 |
| Tiki | Main image | Square 1:1 at 1,200 × 1,200 pixels; a front view of the product on a white background (HEX #FFFFFF; RGB 255, 255, 255) | 11 October 2026 |
| Google Ads | Square | 1:1 — 1,200 × 1,200 pixels recommended, 300 × 300 minimum, in Performance Max and Demand Gen; Performance Max requires square images | 12 October 2026 |
| Google Ads | Logo | Square 1:1 — 1,200 × 1,200 pixels recommended, 128 × 128 minimum; landscape 4:1 — 1,200 × 300 recommended, 512 × 128 minimum (Performance Max) | 12 October 2026 |
| YouTube | Aspect ratio | 16:9 recommended for video thumbnails, 9:16 for Shorts and 1:1 for podcast playlists | 12 October 2026 |
| LinkedIn ads | Aspect ratio | Single image ads: 1.91:1 (horizontal, desktop and mobile), 1:1 (square, desktop and mobile) or 1:1.91 (vertical, mobile only) | 12 October 2026 |
| LinkedIn ads | Square | 1,200 × 1,200 pixels recommended at 1:1; minimum 360 × 360 pixels, maximum 4,320 × 4,320 pixels | 12 October 2026 |
| LinkedIn ads | Carousel | 1:1 ratio with a recommended resolution of at least 1,080 × 1,080 pixels | 12 October 2026 |
| Microsoft Advertising | Logo | Logo extensions: 1:1, PNG or JPG, minimum 128 × 128 pixels; Audience ads take up to 5 logos at 1:1 (128 × 128 pixels minimum) or 4:1 (512 × 128 pixels minimum) | 12 October 2026 |
| Temu | Non-apparel images | Non-apparel carousel images use a 1:1 aspect ratio, with a width and height of at least 800 pixels | 12 October 2026 |
| Square Online | Recommended | At least 2,000 × 2,000 pixels with a 1:1 aspect ratio | 12 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 |
| Amazon Ads | Custom image | For asset-based and Brand Store display creative: square 1:1 recommended 1,200 × 1,200 pixels (minimum 600 × 600), wide 1.91:1 recommended 1,200 × 628 pixels (minimum 600 × 314), tall 9:16 minimum 338 × 600 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 |
| 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 | Brand Shop carousel and category hub | Hero carousel images must be at least 1,494 × 894 pixels, JPG or PNG, 10 MB maximum; category hub images are a minimum of 1,160 × 1,160 pixels at 1:1 with a maximum file size of 1 MB | 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 |
| Nextdoor Ads | Aspect ratio | 1.91:1 rectangle or 1:1 square in the Newsfeed; 1:1 for image ads in For Sale & Free and the desktop-only Right Hand Rail | 12 October 2026 |
| Nextdoor Ads | Carousel | Images only, at a minimum resolution of 1,200 × 1,200 pixels and a 1:1 square aspect ratio, up to 150 MB each | 12 October 2026 |
| Nextdoor Ads | Small-business ads | Photo at a 1:1 ratio and 1,080 × 1,080 resolution, or at a 2:1 ratio and 1,080 × 540 resolution under the Newsfeed specs; jpg or png | 12 October 2026 |
| SHEIN | Main image | Required, 1 image per SKC, and it must be image number 1: 1,340 × 1,785 pixels, or a 1:1 width-to-height ratio within 900 to 2,200 pixels | 12 October 2026 |
| SHEIN | Square image | 1 square image at a 1:1 ratio, from 900 × 900 to 2,200 × 2,200 pixels for an SKC; 1,200 × 1,200 pixels for the SPU square image | 12 October 2026 |
| SHEIN | Colour block image | 1:1 ratio at 80 × 80 pixels; optional for a single SKC, required for multiple SKCs | 12 October 2026 |
| AliExpress | Aspect ratio | 1:1 at 800 × 800 pixels or more, or 3:4 at 750 × 1,000 pixels or more; all images must keep the same aspect ratio | 12 October 2026 |
| AliExpress | Background | The white-background marketing image has a pure white or fully transparent background, at no less than 800 × 800 pixels and 1:1; the scene image has a solid colour or real scene background, at no less than 750 × 1,000 pixels and 3:4 | 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 |
| 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 |
| Outbrain | Aspect ratio | 3:2 is recommended for Standard campaigns and 1:1 for Carousel and App Install campaigns | 12 October 2026 |
| Outbrain | Carousel | 3 to 10 cards; card images are JPG or PNG in a 1:1 ratio, minimum 300 pixels and maximum 1,200 pixels, displayed at 300 × 300 pixels | 12 October 2026 |
Phone photo
From a phone photo to 1:1.
Common 12-megapixel phone photo shapes brought to 1:1: 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 × 4,032 px | ↕ 504 + 504 px |
| 3,024 × 4,032 · 3:4 | 4,032 × 4,032 px | ↔ 504 + 504 px |
| 4,032 × 2,268 · 16:9 | 4,032 × 4,032 px | ↕ 882 + 882 px |
| 2,268 × 4,032 · 9:16 | 4,032 × 4,032 px | ↔ 882 + 882 px |
| 3,024 × 3,024 · 1:1 | 3,024 × 3,024 px | — |
In numbers
1:1 in numbers.
- Aspect ratio
- 1:1
- Width ÷ height
- 1
- Orientation
- Square
Sizes in this ratio
Aspect ratios
Other aspect ratios.
Questions
1:1, answered.
Which platforms ask for the 1:1 aspect ratio?
eBay, Walmart, Faire, Allegro, Wix, WooCommerce, Ecwid, Facebook & Instagram Shop, Tiki, Google Ads, YouTube, LinkedIn ads, Microsoft Advertising, Temu, Square Online, SHOPLINE, Amazon Ads, Walmart Connect, Reddit Ads, Nextdoor Ads, SHEIN, AliExpress, Orderchamp, Weebly, Taboola, and Outbrain. 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 1:1?
It depends on the photo: its pixels stay and padding is added until the shape is 1:1. A 4,032 × 3,024 px phone photo becomes 4,032 × 4,032 px, with 504 px of padding at the top and 504 px at the bottom.
Is the photo scaled or cropped when resizing to 1:1?
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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