Many thanks for this tool. I was using Imagus for years which worked for most sites but my bugbear is that it stopped working with Flickr and the more up-to-date Imagus forks didn't work with Flickr either. Image Max URL does work with it though and I like the custom key settings I can use with it :-)

Super customizable

Whoever made this add on needs to be directly accepted in heaven by the God ♥️♥️♥️♥️♥️

Great app!!! Just unlocked the secrets after having it for a year. Definitely beats looking through developer tools, source code, and page info. Its even finding the larger images where i normally have to resize my browser to try and find the full size image.

I wonder if a little icon "up-scale image/s" would be helpful. I'm not always thinking to hit the key to enlarge things, and always active "hover" is too aggressive for general browsing.

I little tag either like the ones used by apps to rate or mark links as safe, or oh my, maybe like the floating Grammarly icon.

The first gives a coded (Yea/Nea) icon next to various elements with links.

The latter gives a floating red or blue ring around a number of things to improve... for you, it could be a number of images available to up-size. (Not sure if the latter needs an active element). But then, the first might only truly work on the search engines and is coded specifically knowing the Elements for the popular search engines. But then, if you can float the full image on hover, you should be able to hover an icon.

had for 1 year or more i think. i love this extension, it's the only of it's kind that finds the maximum resolution of an online image. even for websites that make it hard to get the highest resolution image this app never disappoints me. i used to use it on Chrome but they banned it so now i just use it on FireFox and Microsoft Edge. hope they never get rid of it.

My Goal is to get larger and better images of what I already have/see.
Now that Google reverse image lookup is no more this add-on is the best. I use it first to find larger/Better image. Even when it fails I can then use "Search by image" add-on, on what it did find to either search Google lens or TinyEye and about 10 other reverse lookup engines. Its not as convenient as google reverse lookup add-on I had but I believe I might actually be getting to what I want faster now. Not in steps but in results found. 60+% of time I find it in first step not needing "Search by image" add-on.

Hello, I just discovered this extension and I find it much better than Imagus. Thank you to the developer! However, I have a problem with Google Images: IMU 2025.12.0 works fine with the first 100 thumbnails on the page, but beyond that, IMU no longer displays the image in full size, but only the thumbnails.
July 2026 : Hello, I tried the new feature suggested by PMiles (the button to view in full size)—it's fantastic! Well done, and thank you to the developer for taking relevant suggestions into account and implementing them quickly!

Great stuff, Found this thing using Grok of all things lol as was looking for a way to download images off Deviant art in higher quality and it delivers!

A must have!

Useful to extract large version of images from some inconvenient sites