Editing Images Within a Squarespace Summary Block
When attempting to edit an image and you find the image is within a summary block, the first thing you do is edit the summary block and click on the Content tab to see which Gallery it's using.
Below, we can see that the "Expertise" gallery is being used so that's the one we want to edit.
We find the "Expertise" Gallery identified above and click to edit that gallery.
Once in the gallery, we find the image we want to edit, hover over the image and then click on the gear icon.
In this case, we want to change the image so we click the "Remove" tab and upload a new image.
To see the size of an image, using Chrome, you can right click on an image and open it in a new tab.
When the image opens in a new tab and you mouse over the image, you can see the size of the original image.
Icons in the above example were found at iconfiner.com. They have a lot of free and low cost icons (about $1 - $2 per icon.