AMMERZE

Free seller tool

E-commerce image resizer

Turn every product photo into the right size for Amazon, Flipkart, Myntra, Shopify, WooCommerce and Instagram in one go. It all happens in your browser.

  • Free, no sign-up
  • Photos never leave your device
  • No watermark
1 · Your photos

Drop product photos here

JPEG, PNG or WebP, up to 30 at a time

Your photos never leave this device

2 · Where they're going
3 · How they should look

Fit

Format

%

Amazon likes the product to fill about 85% of the frame.

/ 100

85 to 90 keeps files small and sharp.

Background

#ffffff

How it's worked out

One photo shoot, every channel.

Sizes follow each channel's published guidance as of 2026. Channels update their rules, so check the current guide for your category before a big catalogue upload.

Last reviewed

  1. 1

    Drop in your photos

    Add up to 30 product photos at once. They're opened by your browser and never uploaded, so even unreleased products stay private.

  2. 2

    Pick every channel you sell on

    Each size is chosen to clear that channel's published minimum with room to spare: square for Amazon, Flipkart and Shopify, 3:4 portrait for Myntra, and 1:1 or 4:5 for Instagram.

  3. 3

    Keep the whole product in frame

    Whole product fits the photo inside the frame on a clean background, with a margin so it fills about 85% of the image, as Amazon recommends for main images. Fill and crop covers the frame edge to edge instead.

    Scale = min(frame width ÷ photo width, frame height ÷ photo height) × (1 − 2 × margin)

  4. 4

    Download one or all

    Every photo is made at every size you picked, named by channel and size, ready to download one at a time or as a single zip.

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FAQ

Good questions.

What sellers ask about the image resizer tool.

Still have a question?

Our team will walk you through it.

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Amazon asks for images at least 1000 pixels on the longest side so shoppers can zoom, and the main image needs a pure white background with the product filling about 85% of the frame. This tool makes Amazon images at 2000 × 2000 pixels on white, which clears the minimum comfortably.

Flipkart product images should be square and on a white or light background, and 1000 × 1000 pixels or more is the safe minimum for zoom. The Flipkart preset makes 1500 × 1500 pixel images. Some categories, such as apparel, have their own background rules, so check the category guide in your seller panel.

Myntra uses 3:4 portrait images, at least 1080 × 1440 pixels. The Myntra preset makes images at exactly that size, so the whole product shows without being cropped by the listing.

No. Resizing happens inside your browser on your own device. Your photos are never sent to Ammerze or anyone else, and they are cleared when you close the page.

The photo was smaller than the size you picked, so it had to be enlarged, which can't add detail that wasn't captured. For sharp, zoomable listings, start from photos at least as large as the biggest size you need.

JPEG is accepted by every marketplace and keeps files small, so it is the safe choice for listings. WebP makes smaller files for your own Shopify or WooCommerce store. PNG is lossless and can keep a transparent background, but the files are much larger.

One catalogue

List once, sell everywhere.

Ammerze maps one SKU master to Amazon, Flipkart, Shopify and WooCommerce and keeps the stock on every listing in sync.

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