Hello @yabdali
Oh, I see what you mean now. However, I have researched this and I do not think it would be right to show the ALT tag in the tooltip. The tooltip is used for the TITLE tag. This is something that’s not necessarily controlled by our theme, as that’s simply how the HTML system works like.
Check this out – https://ibb.co/CBhjNBJ. I have created a very simple HTML file with the same tags added to the image. And after loading it up inside the browser and hovering, the TITLE tag is displayed – https://ibb.co/pKBDm76
After removing the TITLE tag entirely from that simple snippet, no more tooltips appear, which would confirm that’s how things work. It wouldn’t be correct from our end to change these defaults, as people are used to them and messing with people’s muscle memory isn’t fair.
It may be required to implement a specialised plugin for this matter. Many SEO plugins should have some options to adjust these, so you may want to look into those.
Hope this clears everything up!
Thanks.