get position of all the icons in the sprite

[ssivanatarajan]

Is there any way to get the position, width & height of all the icons in the sprite?. Our application is a legacy one, we are using some large sprites, so I need to identify the icons which are not referred to in CSS files?

[jakearchibald]

This app is also a legacy one, sorry! You could take a look at the code and build what you need. The hard bit is figuring which bits count as a whole sprite, especially if they have gaps