Are heavy images slowing your store down?
Images are usually most of a page’s weight. We check your homepage images for file size and modern formats — the two biggest levers on load time.
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Size and format, per image
We collect your homepage images and check each one’s actual delivered file size and format.
Oversized files
Anything over 200KB gets flagged. A 3MB hero image straight off a product camera is the single most common speed mistake in e-commerce — and usually compresses 10× with no visible difference.
Modern format delivery
WebP and AVIF deliver the same visual quality at a fraction of JPEG/PNG size. We check what format each image actually arrives in — not what was uploaded.
Up to 12 homepage images
Hero banners, collection tiles, featured products — the above-the-fold images that dominate your Largest Contentful Paint score.
The LCP connection
Google’s Largest Contentful Paint metric — a ranking factor — is almost always determined by your biggest homepage image. Heavy hero image, poor LCP, lower rankings.
Images are where store speed is won or lost
On a typical Shopify storefront, images account for well over half of total page weight — often far more than every script and stylesheet combined. That makes them the highest-leverage optimization target: compress your five heaviest images and you’ve done more for mobile load time than most code-level tuning ever will. And mobile is where it counts — most Shopify traffic is on phones, frequently on connections where every extra megabyte is a full second of staring at a blank hero section.
Speed is compounding: it affects bounce rate, conversion, Core Web Vitals, and through them, rankings. The good news is that image fixes are non-destructive and mostly invisible — proper compression at web resolution is imperceptible to shoppers while making pages feel dramatically snappier.
What lighter images do for your store
Faster first impression on mobile
The hero image is usually the largest thing on the page. Cutting it from 2MB to 200KB transforms perceived load speed where most of your shoppers actually are.
Better Core Web Vitals, better rankings
LCP improvements feed straight into Google’s page-experience signals — one of the few ranking factors you can move with an afternoon of work.
Lower bounce, higher conversion
Every study replicates it: each second of load time costs conversion. Image weight is where those seconds hide.
Bandwidth savings at scale
Lighter images mean less data transfer on every page view — which shoppers on limited data plans genuinely notice.
Three steps, about ten seconds
Paste your store URL
Any public storefront works — yourstore.com or the myshopify.com address. No login, no install, no admin access.
We scan what visitors see
Our scanner reads your public storefront the same way a browser and a search engine do, and runs every check server-side.
Get your score & full report
Your score and top issue appear instantly. Unlock the full issue-by-issue report — with a specific fix for each finding — with your email.
Common questions
Doesn’t Shopify’s CDN already optimize my images?
Shopify’s CDN resizes and can serve WebP to supported browsers — when the theme requests it properly. But it can’t fix a 4000px original being requested at full size, and older themes don’t use responsive image tags correctly. Our scan checks what’s actually delivered, which reflects the combination of your originals, your theme, and the CDN.
Will compressing images make them look worse?
Not at sensible settings. Modern lossy compression at 80–85% quality is visually indistinguishable on product photos while cutting size by 60–90%. The exception is fine-detail zoom images, where you may want gentler settings.
What’s the practical way to fix oversized images?
For a handful: re-export at the display size (usually ≤2000px wide) at ~80% quality and re-upload. For an entire catalog, use a bulk compression tool with backups and revert — doing hundreds by hand isn’t realistic.
JPEG, PNG, WebP — what should I actually use?
Photos: WebP (or high-quality JPEG if your workflow requires it). Graphics with flat colors or transparency: WebP or PNG. Never PNG for photographs — that’s the classic 5×-too-big mistake.
Bulk compression across your entire catalog — with before/after previews, originals backed up, and one-click revert — is what the image pipeline in Bespop SEO does.