In sublime text I was able to update multiple image sizes at once. With the following keyboard short cut.
{ "keys": [ "shift+ctrl+i" ], "args": { "action": "update_image_size" }, "command": "run_emmet_action", "context": [ { "key": "emmet_action_enabled.update_image_size" } ] },

However this no longer works in Sublime Text 4. Ctrl+shft+I still updates image size but it doesn’t work in multiple cursors at once.