Walmart Marketplace asks for a pure white background on the main image and recommends around 2000 × 2000 px so the zoom feature works. Drop your photos below to resize, pad to pure white and compress them in one pass.
On iPhone/iPad, "Download all" may open the images instead of saving a ZIP — save them one by one from the preview (long-press → Save to Photos / Files).
Walmart is closer to Amazon than to Depop: the main image needs a pure white background (RGB 255, 255, 255) with the product filling the frame, and files should stay small — Walmart caps uploads around 5 MB and favours lean files for page speed.
Use Pad mode with #ffffff at 2000 × 2000 and the geometry sorts itself out: your photo is scaled to fit, centred, and the leftover space filled with pure white. This tool will not cut a busy background out for you — shoot against white, then pad to pure white.
One thing most sellers get wrong: every one of these platforms re-compresses your photo on upload — Vinted re-encodes around quality 75, Depop around 80, Poshmark around 78 — and downsamples anything above their maximum. A 4 MB iPhone original therefore arrives looking softer than a pre-optimised file. Resizing to the platform's own ceiling and compressing to 250–450 KB before uploading means their pipeline barely touches your photo, and your thumbnails stay crisp.
| Placement | Size (px) | Notes |
|---|---|---|
| Listing photo | 2000 × 2000 | Minimum 2000px on shortest side for zoom |
| Big shop banner | 3360 × 840 | 4:1 desktop header |
| Mini shop banner | 1200 × 160 | Narrow strip banner |
| Shop icon | 500 × 500 | Displayed as a circle |
| Listing landscape | 2700 × 2025 | 4:3 flat-lay friendly |
| Listing portrait | 1500 × 2000 | 3:4 clothing friendly |
Around 2000 × 2000 px is the recommended square canvas, with a minimum in the region of 1500 px so zoom works. Walmart's main image should have a pure white background.
Roughly 5 MB per image, which is why compressing matters — this tool defaults to a 1 MB target and can go lower if you need it.
No — the strict white-background rule applies to the main image. For lifestyle or detail shots, switch the fit mode to Crop or choose your own padding colour.