Hi,

Yes, you can.

Example, if you want to put image between category:  "FIL INFO BARCELONE" and category "SORTIR A BARCELONE", please go to Posts > Categories > edit category "FIL INFO BARCELONE" > scroll down on "Add Google Adsense Code/Custom HTML below this category" > and add more the code like this:

<a href="https://google.com/"><img src="YOUR_IMAGE_URL"></a>

Note:

1/ Change https://google.com/ on the above code to the link you want to go when users click on image.

2/ Change YOUR_IMAGE_URL on the above code to the URL of image. You can check this guide to know how to get URL of an image.

3/ If you just need the image - not link on that image, just need use this code:

<img src="YOUR_IMAGE_URL">

Best Regards,

PenciDesign