Extend image zoom modes with scale-to-width and scale-to-height of window
On direct image URLs (not embedded images), tweak how the browser handles mouse clicks.
Toggles between three modes: Normal, scale to window width, scale to window height. Scale to window width is very useful for reading comics and other things that you want to scroll, but not to exceed your window's width. Similarly, scale to window height is useful to e.g. view panorama photos.
Additionally, small images can be zoomed in instead of only being able to zoom out large images.
Only tested in Firefox.
Donations are welcome! ฿ 1DC3epgqEUfYbPQcpkf8gSnAWAj1P3JGdo
