I had high hopes for this BUT I should have respected some of the other reviewers comments more.

I set up 3 web pages of various levels of being tricky in how they hide images. Given the 1st basic image gallery, and after playing with the settings like file size, it worked, but so does every image downloader.

The 2nd web page was a little tricky, but my usual goto Neodownloader (free version ) can handle it, BUT this couldn't, only finding about half the images, and yet still downloading other images that I specifically said don't download in the options.

The 3rd web page goes out of it's way to hide images behind other servers and HTML pages on top of the actual images, and this software not only got nothing but created lots of unreadable empty/damaged image files.

Bottom line, it says it can handle this and that but doesn't, the options interface is VERY unfriendly and took a lot of time to tailor... which it then ignored after a few goes, so very unreliable. It gets 1 star because unlike other reviewers it does have the option to save as individual files rather than a zip file, so I'll give it that.

In this moment this extension not work so good with page were you need log in (protected with userh & pass).

After save the first round of images you will see that you need relog-in to the protect site for keeping save more images. So this need to fix with very urgency.

I'm afraid it just doesn't work that well. Doesn't download all the images on a page and sometimes downloads from the wrong tab. Needs work IMO.

Great job. But the '_' in filename was replaced with '-' after download.
Eg:
2018_10.jpg was renamed to 2018-10.jpg

The interface is not good for mobile adroid

[Updated 2023: Removing a star]

In addition to all the issues mentioned earlier, I've found that Download All Images does not download "blob" URL images. That means it does not work on many sites, such as the tiled images when zooming in on https://artsandculture.google.com/asset/el-si-pronuncian-y-la-mano-alargan-al-primero-que-llega-they-say-yes-and-give-their-hand-to-the-first-comer/NAHi_9r0H5PfJw .

For now, I am using the "Search by Image" extension to download blob images, but it can only do one image at a time. I hope that Download All Images will eventually add support for blobs.

[Original review from 2018 below]

Worked for Firefox (Adblock Browser) on Android, but was extremely clunky. All the unnecessary options should be hidden by default. The UI elements, like checkboxes should be bigger. The progress bar that says "saving" should be renamed "retrieving" as it doesn't actually save until you scroll down to the bottom of the panel and click "save". The Gallery should let you select images by clicking on them instead of a tiny checkbox. Gallery ought to be the default view.

In the end, this did work. I was able to retrieve an image that Google Books wasn't letting me get a context menu to save. However, it would have been easier to just use the save media option from Firefox's built-in Page Info (control-I) on a desktop than to struggle with this extension.