If you sell on more than one marketplace, you already know the pain: the same product photo that looks perfect on Shopify gets rejected by Amazon, padded with ugly white bars on Lazada, or shrunk into a fuzzy thumbnail on Shopee. Every platform has its own pixel dimensions, aspect ratios and file-size limits, and editing each image by hand across five or six channels is a quiet time sink that eats your whole afternoon.
The fix is batch resizing: prepare your photos once, then export them to every marketplace's exact specification in a single pass. This guide walks through the dimensions you need in 2026, the order of operations that keeps your images sharp, and a repeatable workflow that turns a half-day chore into a few minutes.
Why one image size never fits all
Marketplaces display product grids and zoom viewers differently, so they demand different source files. Upload a 1200 x 800 landscape photo to a platform that expects a 1:1 square and one of two things happens: the image is rejected outright, or it is automatically padded with white space so the product appears smaller than your competitors' listings. In crowded search results, a product that fills less of its tile simply looks less substantial, and that costs you clicks.
There is also the speed cost. A 4 MB photo that loads instantly on your fast home Wi-Fi can stall on a shopper's mobile connection. Slow-loading images hurt both conversions and search ranking, so every marketplace caps file sizes and rewards lean, well-compressed files.
2026 image specifications by marketplace
Here are the current requirements for the platforms most small and mid-sized sellers use. Always design to the recommended size, not the minimum, because the recommended figure is what gives you crisp zoom on high-resolution phone screens.
| Marketplace | Aspect ratio | Minimum | Recommended | Max file size |
|---|---|---|---|---|
| Amazon | 1:1 square | 1000 x 1000 px (for zoom) | 1600 x 1600 to 2000 x 2000 px | 10 MB |
| Shopify | 1:1 square | 1024 x 1024 px | 2048 x 2048 px | 20 MB |
| Shopee | 1:1 square | 500 x 500 px | 1000 x 1000 px or larger | 2 MB |
| Lazada | 1:1 square | 330 x 330 px | up to 2000 x 2000 px | 3 MB |
| Etsy | 1:1 square (4:3 also allowed) | 2000 px on longest side | 2000 x 2000 px | 20 MB |
| eBay | 1:1 square preferred | 500 px on longest side | 1600 px on longest side | 12 MB |
| Qoo10 / Carousell (SG) | 1:1 square | 500 x 500 px | 1080 x 1080 px or larger | keep under 2 MB |
Two patterns jump out of that table. First, square (1:1) is the universal safe format — it works everywhere, while landscape and portrait formats only suit certain channels. Second, a single master file at 2048 x 2048 pixels comfortably exceeds every recommended size above, which means you can shoot and edit once, then downscale to each target without ever losing quality. Downscaling keeps detail; upscaling invents it, so always work from the largest version you have.
The golden rule: crop first, then resize
The single biggest mistake sellers make in batch workflows is resizing before cropping. Do it in the wrong order and your products end up at inconsistent scales — one item filling the frame, the next floating in a sea of white. Follow this order instead:
- Crop to a consistent aspect ratio first. Square (1:1) is the safe default. This is what makes your product grid line up cleanly across every listing.
- Centre the product and standardise the margin. Most marketplaces want the product to fill 70 to 85 per cent of the frame. Amazon and Lazada are strict about this; aim for a consistent border so every photo in your catalogue feels like part of one set.
- Resize to each platform's target dimension from that single, properly cropped master.
- Compress last, once dimensions are locked.
What about products that should not be cropped?
If a product is wider than it is tall — a surfboard, a banner, a long necklace — forcing a square crop would chop off the ends. The answer is to pad with white rather than crop. Padding adds white borders to make the canvas exactly square while keeping the full product visible inside. The result satisfies the 1:1 requirement without losing any of the item, and on a white-background listing the padding is invisible.
Finding the file-size sweet spot
Big dimensions and small file size are not opposites — you can have both with sensible compression. The targets professional sellers aim for in 2026:
- Standard product images: under 300 KB. This stays well within every marketplace cap and loads fast on mobile.
- Thumbnails: under 100 KB.
- JPEG quality 85 is the proven sweet spot. It typically holds a 2000-pixel image under 1 MB while keeping enough detail for zoom to look sharp. Below quality 80 you start to see blocky artefacts on smooth surfaces and gradients.
For format, JPEG remains the universal choice for marketplace uploads because every platform accepts it. WebP is now supported by nearly all browsers and can cut file size by up to 35 per cent versus JPEG, so it is an excellent option for your own Shopify store — just confirm a marketplace accepts WebP before uploading there, as some still require JPEG or PNG. Use PNG only when you genuinely need transparency, since PNG files are far larger than JPEGs for the same photo.
A repeatable batch workflow
Here is a workflow you can run for an entire catalogue, whether you have 10 products or 1000:
- Shoot or source at high resolution — at least 2048 x 2048 px, on a clean white background.
- Edit your master files once: crop to square, centre the product, fix the background, correct colour. This is the only step that needs human judgement.
- Batch-export to each marketplace's spec in one pass — square crop or white pad, the right pixel dimensions, JPEG quality 85, and compression to your size target.
- Spot-check three or four images from the batch at full zoom before you upload anything.
- Keep your 2048 px masters in a backup folder. When a new channel or a new spec appears, you re-export from the masters in minutes rather than re-shooting.
This is exactly the kind of repetitive, rules-based work that tools are built for. PixelPrep is designed around this multi-marketplace problem: drop in your photos, choose your target platforms, and it crops to square, pads with white where needed, resizes to each marketplace's dimensions and compresses to a sensible file size — across your whole batch at once. It is purpose-built for sellers juggling Shopify, Shopee, Lazada, Amazon, Qoo10 and Carousell, so you are not learning a heavy photo editor just to make your listings compliant.
Common batch-resizing mistakes to avoid
- Upscaling small originals. Enlarging a 600 px photo to 2000 px produces a soft, mushy image. Always work down from a large master.
- Resizing before cropping, which leaves your products at inconsistent scales.
- Over-compressing, pushing quality below 80 and introducing visible artefacts on smooth surfaces.
- Adding text or watermarks to main images. Amazon and most other marketplaces prohibit overlays on the primary photo.
- Ignoring the fill ratio, leaving too much empty space so your product looks small in search tiles.
Your batch-resize checklist
- Master files at 2048 x 2048 px or larger, square, white background
- Crop to 1:1 first; pad with white for non-square products
- Product fills 70 to 85 per cent of the frame, consistently across the catalogue
- Resize down to each marketplace's recommended dimension
- Export as JPEG at quality 85; consider WebP for your own store
- Standard images under 300 KB, thumbnails under 100 KB
- No text or watermarks on the main image
- Spot-check at full zoom, then keep the masters for next time
Get the workflow right once and multi-marketplace selling stops being a chore. Prepare your photos to a single high-resolution standard, automate the export to each channel's spec, and you will spend your time growing the business instead of wrestling with pixel dimensions.