images.tooling.report

ETag

Is content served with ETags?

a child looking into a telescope, pointed upwards

Introduction

what

The Test

no

Conclusion

akamai
bigCartel
cloudflare
cloudinary
ecwid
fastly
goDaddy
imageEngine
imaginary

Imaginary's built in server and offical docker image does not provide ETags, but you can add them but utilizing a reverse proxy in production.

imgix
imgproxy
optimole
shopify
shortPixel

ShortPixel Image Optimizer (the plugin being tested) serves images from your own WordPress server, it is up to you to serve it via HTTP2+. Therefore, this is not applicable. ShortPixel does have an API that does set an ETag Header.

smush
squarespace
thumbor
webflow
weebly
wix