E-commerce grids
Repeated product cards make every saved kilobyte compound across category and search pages.
roi calculator
Estimate the upside of fixing heavy images
Use one page type, your current image weight, and a realistic optimized target to decide whether an image CDN test is worth doing this week.
default example
A product grid with repeated thumbnails
Traffic
100,000 monthly views x 12 product images
Current weight
420 KB average original image
Optimized target
120 KB right-sized WebP or AVIF variant
First decision
If the estimate is meaningful, test one template before migrating everything
calculator
Model one image-heavy page type
Keep the inputs conservative. The goal is not a perfect forecast; it is to decide whether one image path deserves a 48-hour Skymage test.
monthly estimate
Image requests
Saved transfer
GB
Bandwidth savings
Conversion upside
Potential monthly upside
Use this as a prioritization signal, then validate with a before-and-after page test.
test plan
Pick one URL pattern
Product thumbnails, article hero images, listing cards, or uploaded avatars.
Create one Skymage variant
Start with width, format, quality, and crop. Keep visual quality acceptable.
Compare before expanding
Measure transferred bytes, dimensions, cache behavior, and LCP on the same page.
where it helps
Use ROI to choose the first image path
The best first test is usually a repeated image pattern with enough traffic to make savings visible within a week.
CMS hero images
Large article and landing page heroes often decide LCP on mobile.
Marketplace listings
User-uploaded thumbnails need predictable size, crop, format, and cache behavior.
Agency retainers
A simple ROI estimate helps justify a client performance task before implementation.
free check
Turn the estimate into a one-page audit
Send one public URL and Skymage will identify the first image path to test, the URL parameters to try, and what to measure before rolling it out wider.