Hi Emre
I got the following response from CDN77:
Hello,
Yes, we support caching .webp images.
Also for the two no-caching images I tried to curl them-
curl -I “https://mirkoreichlin.ch/wp-content/uploads/apollo13_images/DSC01215-6n22e74t0e25h6whob2xrhm2y3zkj55hsg.jpg”
HTTP/1.1 200 OK
Date: Wed, 10 Jan 2018 20:27:30 GMT
Server: Apache/2.4
Upgrade: h2,h2c
Connection: keep-alive
Last-Modified: Mon, 25 Dec 2017 10:24:18 GMT
Accept-Ranges: bytes
Content-Length: 56130
Cache-Control: max-age=2592000
Expires: max-age=2592000, public
Content-Type: image/jpeg
The problem is with the part “Expires: max-age=2592000, public”
The correct syntax should look – Expires: <http-date>
for example: Expires: Wed, 10 Oct 2018 07:28:00 GMT .
Please change this part to correct one.
Best,
Vojta Kaninsky
I forwarded this message to the theme provider as well. Or is this a problem from the Cache Plugin?
Thank you, for your help,
Mirko