coordinates

Note local files: In the extension details you have to explicitly tell chrome that you want to "Allow access to file URLs". see https://www.youtube.com/watch?v=D8pf38ifgUM for the steps

This extension adds a mouse position tooltip, with its x, and y coordinates. It also allows you to measure area dimensions by dragging the cursor, like a pixel ruler.

As an option, you can set the triggering action for measuring areas to be the keyboard shift key (hold down shift, move mouse and hold up shift). This avoids the browser selecting things when you try to measure. It also prevents other default mouse behaviours, like scrolling when you are dragging your cursor.

Noted issues: It should work after install, but the web is complicated. try refreshing the page if things do not work right away.

Iframes, usually ads, will look like another page and the parent page will lose track of coordinates.

Please send me feedback, I would appreciate it.