Probably not what you’re looking for, but here’s a workflow that utilizes the window tiling feature in Windows or Mac, any browser, and some minor digital elbow grease. This works better if you’ve a high-resolution monitor without “scaling” enabled or just a large monitor.
The idea is to go from this:
To this:
To do that, you first duplicate the tab. Every browser has this option. Chrome has it as “Duplicate” and Firefox has it as “Duplicate Tab”:
After you duplicate the tab, right click and select “Move Tab > Move to New Window”. In Chrome, it’s simply “Move tab to new window”.
The new window will cover your original.
In Windows, click and hold the new window from the title bar to the right side (or left) of your screen. When you see a gray box (or some other color), let go of the mouse button.
Note: on Mac, this is called window tiling, and I believe it can be done by clicking and holding the top of the window and dragging the window while you hold the option key.
Anyway, after you drop the window, on the left side, you can select the original window.
Now on the right side, scroll to the “Suggest an Identification” text box, click on it, and when you see the suggestions you can do Ctrl + Click on “View” to open the suggestions as individual tabs in a few clicks:
After that, you can just go to whatever tab you want for your comparison, and hit “View More” for the photos:
And then you can browse individual photos or use the photo browser:
Now, the good thing about this is that the above is just the initial setup. After this, you can maximize your left window if you want. And if you need to do comparisons again, drag that window to the left to tile it, then duplicate the tab, then drag that tab to the right window, do some basic cleanup (close old tabs), and open the suggestions as tabs from the “Suggest an Identification” text box once again.
Anyway, it’s a bit unorthodox, but it’s worked for me in my limited range of knowledge.