In Zoom v1.32
Enlarge photos and videos "inline", using shift + mouse wheel.
This extension works "inline", i.e. images are not displayed in a popup - instead they are enlarged exactly where they are.
When zoomed in/out, you can drag the image around, if necessary.
It's open source (on github)
If you have any suggestions, please don't hesitate to reach me on [email protected] or file an issue on the github page above.
New in version 1.3: a shortcut for bringing the element to the front, in case it's covered by other elements ( https://github.com/kpion/inzoom/issues/5 )