Hi, I'm happy you find the extension useful! You could also experiment with the options listed below to extract potentially larger versions of the image from the source code of the page. These options are not enabled by default because it takes a bit longer to download all variants of the selected image.

* Use deep search when selecting images
* Detect alternative image sizes

New versions are uploaded to all supported platforms at the same time, but on Firefox it usually takes more time for updates to get approved for distribution.