How It Works
We scan image tags in the initial HTML and report image count, missing alt text, missing width/height attributes, and lazy-loading signals.
100% freeNo API keyPublic data onlyNo store login
Free Image Size Checker for Ecommerce
Scan product and page images for missing alt text, missing dimensions, lazy loading signals, and optimization opportunities.
Scan a public storefront URL
Get focused issues and recommendations
Run the full audit for store-wide priorities
This check is useful alone. It is stronger inside a full audit.
Combine this result with SEO, trust, speed, conversion, security, accessibility, and revenue-priority checks.
Run full ecommerce auditWhy It Matters
Large or poorly marked-up product images can hurt speed, layout stability, accessibility, image SEO, and shopper confidence on product and collection pages.
What We Check
Sampled image URLs, alt coverage, width and height attributes, lazy loading usage, and visible ecommerce media hygiene.
Best Practice
Use WebP or AVIF, compress product media, set dimensions to reduce CLS, lazy-load below-fold images, and write useful alt text for product imagery.
When ecommerce teams usually run this check
Merchants usually use Image Size Checker for Ecommerce before a launch, redesign, SEO sprint, conversion optimization cycle, or competitor review. It is useful when you need a focused answer fast without running a full audit first.
This is also a good pre-check before sending more paid traffic to a page. If the result exposes weak fundamentals, it is often cheaper to fix them before spending harder on acquisition.
Common mistakes this tool can help surface
A lot of stores lose performance because teams check only the homepage, optimize the wrong template, or fix cosmetic issues before structural ones. Focus first on the pages that matter for discovery, trust, and conversion.
- Reviewing one URL and assuming the whole store behaves the same way
- Treating the score as the goal instead of using it to prioritize fixes
- Ignoring mobile, product-page, or legal-page context when it matters to buyers
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Find Out What's Costing You Sales
A complete audit of your store's trust, SEO, speed, conversion, and security โ with prioritized fixes ranked by revenue impact.
Want a full breakdown of your store revenue leaks?
The tools above are just the start. Our full audit analyzes 8 dimensions, gives you a prioritized fix list with revenue estimates, and a certification badge.