html image inserted in cell too big

I’m using a calc to take notes from a wiki OpenSCAD User Manual/The OpenSCAD Language - Wikibooks, open books for an open world
If I insert a chunk of text & images into a column the text spreads nicely across a few cells
The images spill over the edges & cover adjacent cells
How can I easily resize to fit the cell?
I can do a click & drag a corner to resize within a cell
Is there an extension? or other method?