Image Spec Check

General image size checker

Website Image Size Checker

Check website images for dimensions, file size, format, aspect ratio, and common optimization issues before publishing them on product pages, marketplaces, or landing pages.

Quick answer

Website image specs at a glance

Recommended size
Match the rendered slot; 1200 x 1200 px is a flexible working target
Minimum size
Depends on the page area, product zoom, and thumbnail frame
Aspect ratio
Match the card, hero, product grid, or thumbnail crop
File types
JPEG, PNG, WebP, GIF, SVG
File size
10MB preflight warning; compress based on performance needs
Best for
General website images before platform-specific validation
Platform target1200 x 1200 px flexible target
Recommended formatWEBP
File limit10MB
Supported formatsJPEG, PNG, WebP, GIF, SVG

Compliance

Compliance results

Upload an image to see dimension, aspect ratio, format, and file size checks.

  • Image dimensionsWaiting for uploadUse enough pixels for the page area, product zoom, social cards, or thumbnail frame where the image will appear.
    Registry value: 1200 x 1200 px flexible target
    Waiting for an uploaded image.    Recommendation source
  • Aspect ratioWaiting for uploadMatch the expected frame when the image will appear in cards, galleries, product grids, or thumbnails.
    Registry value: Match the rendered frame
    Waiting for an uploaded image.    Recommendation source
  • FormatWaiting for uploadJPEG, PNG, WebP, GIF, or SVG depending on the image type and upload target.
    Registry value: JPEG, PNG, WebP, GIF, SVG
    Waiting for an uploaded image.    Recommendation source
  • File sizeWaiting for uploadKeep website images as light as practical for the use case; this checker flags files above 10MB.
    Registry value: 10MB
    Waiting for an uploaded image.    Recommendation source

Preview

Website product and thumbnail preview

Export

Crop, compress, and export

Good quality range for product images.
Spec sources

Pixel size

Check Image Dimensions

Measure the actual pixel width and height of the upload before it goes into a product card, listing gallery, landing page, CMS slot, or thumbnail frame.

Shape

Check Aspect Ratio

Aspect ratio controls the crop shape used by product grids, hero areas, thumbnails, and marketplace preview frames. Match the final slot before exporting.

Weight

Check File Size

Catch heavy uploads before they slow a page or interrupt a listing workflow. Compress only as much as needed so product detail stays clear.

Type

Check File Type

Confirm the image format before upload. JPEG, PNG, WebP, GIF, and SVG can all be useful, but support depends on the CMS, storefront, or marketplace.

Next step

When to Use a Platform-Specific Checker

Use this general checker for a first pass, then switch to a marketplace checker when the final upload target has strict dimensions, ratio, format, or file-size rules.

Marketplace image requirements

Check Marketplace Image Requirements

For strict seller uploads, use the checker that matches the final platform. Each tool includes platform-specific dimensions, ratios, file formats, file size checks, and preview frames.

YouTube Thumbnail Checker

Check whether a custom thumbnail meets YouTube's recommended dimensions, 16:9 aspect ratio, accepted formats, and device-specific file size limits.

Etsy Listing Photo Size Checker

Check Etsy listing photo pixels, supported formats, square thumbnail fit, and crop risk before publishing.

Amazon Main Image Size Checker

Check Amazon main image size, square framing, accepted formats, and manual review items such as white background and product-only content.

Shopify Product Image Checker

Check Shopify product image upload limits, recommended 2048 px square sizing, file size, megapixels, and supported formats.

eBay Photo Size Checker

Check eBay listing photos against the 500 px minimum, 1600 px recommendation, 12MB upload limit, and accepted formats.

Walmart Product Image Checker

Check Walmart Marketplace product images for 1:1 ratio, 2200 px target, 1000 px zoom minimum, 5MB limit, and supported formats.

TikTok Shop Image Checker

Check TikTok Shop product images for the 600 px minimum, square upload expectation, practical JPG/PNG export, and white-background policy items.

Amazon main image checkerShopify product image checkerEtsy listing photo size guideEtsy listing photo size checkereBay image size limit guideeBay photo size checkerWalmart product image checkerTikTok Shop image checkerYouTube thumbnail checker

Comparison table

Marketplace Image Size Comparison

Use this compact table to choose the right platform-specific checker after the general image size check.

PlatformRecommended dimensionsAspect ratioFile size
Amazon2000 x 2000 px working target1:1 square is a practical main-image targetNo universal hard limit verified in the cited guide
EtsyAt least 2000 x 2000 pxConsistent ratio; square is safest for reusable cropsFiles over 1MB may not finish uploading on slower connections
eBayAbout 1600 x 1600 px1:1 or 16:9 generally works best12MB per image
Shopify2048 x 2048 pxConsistent 1:1 is safest for product gridsUnder 20MB; max 5000 x 5000 px or 25MP
Walmart2200 x 2200 px1:15MB maximum
TikTok Shop1000 x 1000 px working target1:1 squareNo image limit stated in cited US guidance
YouTube3840 x 2160 px16:92MB mobile, 50MB desktop

Common questions

Frequently asked questions

How do I check website image size?

Upload an image to measure its pixel dimensions, aspect ratio, file size, and format, then compare those values with the page or marketplace where the image will be used.

What image dimensions should I use for product pages?

Product page dimensions depend on the layout, but a large, consistent source image gives you more room to crop, resize, and export platform-specific versions.

Does file size affect image quality and page speed?

Yes. Large files can slow pages, while heavy compression can blur product detail. Check both file size and visual clarity before publishing.