Powerful picture viewing tool online, which can popup/scale/rotate/batch save pictures automatically
For image download I'd suggest this extension it's professionally made and very effective at finding resolutions of images
https://chromewebstore.google.com/detail/imageassistant-batch-imag/dbjbempljhcmhlfpfacalomonjpalpko
Though not updated recently. The dev could be contacted to ask the situation of the extension.
It works... And has features. I don't want to be negative but there's better and also lighter executions than this. Imagus Image Max Url. I'd go for Imagus it's the current best and modern solution.
https://github.com/TheFantasticWarrior/chrome-extension-imagus
https://www.reddit.com/r/imagus/
Imagus at Chrome web store is an old not updated version anymore.
Image Max Url
https://github.com/qsniyg/maxurl/
https://www.reddit.com/r/MaxImage/
https://openuserjs.org/scripts/qsniyg/Image_Max_URL