Thanks for the suggestion, I've added a new feature in 2023.12.0 to turn the blacklist into a whitelist (Set the relevant blacklist mode to Whitelist), as well as a new "Host blacklist" option to specifically enable/disable IMU popups for host websites.

Could you let me know which websites don't work anymore? It's very possible they updated their websites in some way, and I haven't been aware of it to update it. Feel free to use any of the channels listed at the end of the addon's description for communication (github/discord/email etc.)

I also just updated the addon to 2023.8.0. See if it solves any of your issues :)

Can you try with the latest version (2023.8.0)? I believe I fixed most of the DeviantArt issues there :)
Edit: Glad to know it works for you again!

If you're referring to Imgur, this issue should be fixed in the next release: https://github.com/qsniyg/maxurl/issues/1050
If not, could you let me know which website it does this on? The issue you're describing is definitely not intended behavior, so I'd love to fix it if possible :)

> Sadly, no copy to clipboard, the most frequent function used on daily basis

Try Shift+C (default, modifiable via the Shortcuts tab). Alternatively, you can also setup an alternate popup trigger with its respective popup action set to "Copy link". Note that for this to work, "Enable writing to clipboard" (under the General tab) must be enabled.

Edit: Copy picture is tracked here: https://github.com/qsniyg/maxurl/issues/269

> Drag and drop outside of browser not working

Thanks for letting me know, I hadn't thought of that use case! I suppose there could be an option to prevent dragging the popup (thereby allowing the image itself to be dragged) via a certain key being pressed. Or another option to disable popup movement altogether. Two more options couldn't hurt... :)

Tracked here: https://github.com/qsniyg/maxurl/issues/1082

> but then i miss a shortcut to enforce popup (on filtered items)

If I understand correctly, would a "Force popup trigger" key (that will open the popup regardless of the minimum size etc. options) fix the issue you're having?

> it's not enough until the most useful setting "Open if size is +25%" exists

I thought I'd added an option like that a while back, but I don't see it either. Yeah I completely agree that should be added :)

Tracked here: https://github.com/qsniyg/maxurl/issues/1081

Thank you very much for the feedback, and sorry for the late reply. If you want to follow up, feel free to use one of the social channels (Github/Email/Discord/etc.), it's a bit hard to have a conversation on Mozilla Addons since it doesn't allow back-and-forth conversation unfortunately (unless they changed something recently).