Search result Image and read more.

Hello.
In my search results i get the title and the text but i get the images only on some articles.

i use
Title + HTML intro.

And Thumbnails are on.

Peter.

Would you kindly provide some links to make troubleshooting easier for us?
If that's not an option, could you spot any difference between the images that show up and the ones that dows not? E.G. location localt / external, directory, file naming, etc