Very helpful, thank you

Definitely the best extension of it's kind if you take the couple minutes it takes to figure it out.

Thank you Canapy!
I used this wonderful add-on on a FF version older than 57(after which, basically our experience in FF became more or less painful).
It gets the job done! How? Let me tell you. Well, with a bit of help from another wonderful good old FF extension called Flashgot(it seems that Mozilla removed this extension from their add-on website, like it is the case with many extensions that could not be ported to those damn webextensions).
So, here are the steps:
0.make sure you have set in the Image Downloader preferences the Deep Scan(extremely IMPORTANT feature that can pick original size images that are behind thumbnails{kind of you see a thumbnail image that is actually a webpage that contains a link to the original image}) and chosed a minimum width(height) of images from hyperlinks{I have chosen 500}
1.Click Image Downloader button, then click Current Tab
2.The extension is very helpful showing you the resolution of the picked images(and a direct link to the original image), so you can select with left click every image you want. After that you click on "Save to Dash board" (it is a button on the right top corner. (Save to folder did not worked for me at all, but even if it did, considering the limitations that Mozilla imposed(the fact that add-ons can only download under Downloads folder, and cannot let the user select the desired location), would have been for nothing.
3.Click Image Downloader button, then click "Dashboard". In the page that opens, right click then FlashGot All, then you can select the desired location download the images.

P.S. Just a thought for the developer: if you could somehow send the selected links from the ImgDwnldr_Menu, to another downloader(another extension or program outside of FF) which for sure let us select the download location !?
Cheers!

This extension is basically a waste of time. Far too complex. For practical purposes, if you need to batch download a bunch of pictures, you must first select the ones you want and have them opened in tabs to the right, then invoke Downloader and chose the pix to the right. Or, you can just have Downloader open all links on the current page and it then opens with every link presented, then you must go through, if all are selected (noted by a yellow line around the pix) deselect them all, one click. then go and select each image you want downloaded. Ain't got time for this kind of s$&t.

there used to be available a simple batch downloader where you selected the images on the site of your choice. then right clicked on the page and you could tell it to download the selected images. Simple. that is what I want.

Всё супер, за исключением того, что нельзя указать целиком путь для сохранения, только имя папки в папке загрузок по умолчанию. А если в настройках FireFox стоит "Каждый раз выдавать запрос", то запрос выдаётся на каждый файл, что сводит на нет саму идею пакетной закачки. Очень надеюсь, что появится возможность указывать путь сохранения целиком - тогда это будет идеальное расширение. В остальном просто шикарно, спасибо большое автору!

Everything is super, except that you can not specify the entire path to save, just the folder name in the default downloads folder. And if in the FireFox settings it is "Every time to issue a request," the request is issued for each file, which negates the very idea of batch download. I hope that it will be possible to specify the entire save path - then this will be the ideal extension. In the rest it's just gorgeous, thanks to the great author!

The add-on works as intended, but I realy hope that you can make us pick a location where to save the selected images, which is independent from Firefox's setting. The way it is tied to Firefox's download setting makes it hard to use. Also more costumization for file renaming, such as picking the number of digits, padding them with zeroes.

This is what i was looking for! Fast and easy to use. Thanks!

¿Se podría hacer que de 10 imágenes por ejemplo, unas de ellas fueran a una carpeta o subcarpeta y las otras fuesen a otra carpeta o subcarpeta?.

google translate
¿You could make 10 images, for example, one of them go to a folder or subfolder and the others go to another folder or subfolder?

It works great. Thank you very much