DPImageDownloader by DP

DPImageDownloader extension monitor images' related network requests and lets you bulk download the ones you want.
You can filter by size, width, height and by tabs with similar host or titles*.
You can choose a global subfolder where the pictures will be stored and an addictional subfolder for each download batch.

Detects only images that are loaded after this extension is installed and/or enabled, for images that are already loaded you need to refresh the relative tab(s).

* Similarities depends on the selected tab.

v1.10.0
Added pagination for tab filters.

v1.9.2
Bugfix photo disappearing when closing tab with common images.

v1.9.1
Bugfix download in incognito mode.

v1.9.0
Reintroduced support to Firefox versions from 52.0 and above.
Loading UI.

Icon made by Smashicons from www.flaticon.com is licensed by CC 3.0 BY