CDN image optimization
Transform images at delivery time, not in a batch job.
Most teams still generate derivative images at upload. That pipeline lags new layouts and still ships overweight originals to the browser.
Keep a single source image. Cloud CDN converts to WebP or AVIF, resizes and crops from query strings, then caches each variant at the edge.
Why teams use Aptranet
What CDN image optimization looks like on this network.
Cloud CDN caches and accelerates eligible content on 210+ points of presence, with Origin Shield when the origin must stay out of the way.
Up to 85% smaller at a given quality
WebP and AVIF conversion happens at the edge from one source file.
Layout-specific sizes from a URL
Resize and crop through query strings instead of storing every breakpoint.
Variants cached globally
Each derived image is stored on 210+ PoPs after the first request.
How to set it up
A cutover you can validate before DNS moves.
Create the Cloud CDN configuration, prove it on an Aptranet hostname, then point production DNS when the path looks correct.
- 1Point the media origin at Cloud CDN
CMS uploads, a files host or an application disk over HTTPS.
- 2Enable conversion and resize
Turn on WebP/AVIF and query-string geometry for the media hostname.
- 3Update templates to request sizes
Product cards, heroes and OG images can each ask for the width they need.
- 4Cache and purge by source URL
When the original changes, purge it so variants rebuild.
Outcomes
What changes once the hostname is on Aptranet.
- One source image supports every layout
- WebP and AVIF are created at the edge
- Derived files are cached worldwide
- Replaced originals can be purged
Keep reading
Related pages
More CDN use cases on the same Cloud CDN footprint.
Frequently Asked Questions
Serve a compatible format for the client. Conversion is a delivery-time choice, not a stored-only format.
Yes. Many teams keep the CMS as the source and let Cloud CDN handle output formats and sizes.
Yes. Balance visual fidelity against page weight per template rather than one global derivative.
No. A DAM still stores rights and originals. Cloud CDN is the delivery and transformation layer.