I want to extend the functionality in the "view page info" window to allow for filtering of page media. This will be very useful for me and I can avoid using add-ons like 'Download all images' (slow and only works for images) Req: Under the 'media' section, I want a 'filter' option that allows me to filter the media that matches a given regular expression. Simple ask. There are the things I did: 1. Browsed through the add-ons to find something on "view page info". Found nothing. Even on Google. 2. Browsed through the documentation on developing extensions with the hope of developing one. I didn't find any examples on how to modify this particular window. (I am a developer myself) Can someone point me in the right direction for this particular case ? (No generic replies please) Please see attached screenshots of what I want.