Welcome to Firefox for Android Add-ons.
Add extra features and styles to make Firefox for Android your own.
CloseReview for Image Zoom by Chis
Rated 1 out of 5 stars
In spite of having this Add On (as well as Firefox) kept up to date the only options that work are full size and restore (and I suspect that they are part of the Fox).
To create your own collections, you must have a Mozilla Add-ons account.