Load your product photo into each platform's template, align it inside the safe zone by dragging and zooming, and download every size in several compression levels as a ZIP — with one folder per platform. Amazon, eBay, Etsy, Shopify (incl. the default Dawn theme) plus Instagram, Pinterest, Facebook and TikTok are built in as templates. Everything runs locally in your browser — your images are never uploaded.
Every marketplace has its own requirements for aspect ratio, resolution and background. Instead of cropping each image separately, you load it once, align it in the preview and export all target sizes at once. The safe-zone frame shows you whether the product sits right — before the listing goes live.
For export you pick the format (JPG, WebP or PNG) and one or more compression levels. That way you can get both a high-quality and a lighter, fast-loading variant per size in one go. Why small images matter for shops is covered in Optimizing images for e-commerce.
And because all processing happens locally in your browser, your product photos never leave your device — no upload to a third-party server, no privacy risk.