I don't know if @joker_josue is giving anyone who asks an account and API key, but if he is... you can use this script to add a button that instantly uploads an image directly from the forum!

Install here:
https://greasyfork.org/en/scripts/465886-bitcointalk-image-upload-button-talkimgFor transparency: since joker_josue is having trouble setting up CORS, this script uses a proxy I deployed to tunnel the requests. This means that I could technically read your talkimg api key when you make a request. Pinky promise that I don't, but realistically you can't never know.
You can always use your own proxy and change the url ("uploadUrl" variable).
I installed the script using my API key.
The upload icon appeared, but when I try to upload an image, the following error appears in the console:

Is the link
https://proxy.ninjastic.space/?url=https://talkimg.com/api/1/upload still working?
I tried opening the link directly, but it gives me an SSL error.
Also, if you @joker_josue and @TryNinja would allow me, I'd like to use the script in my extension if it still works.
@TryNinja can you check the situation? Maybe it's something with the proxy, because of the changes to your domain.
Perhaps trying it without the proxy is possible. Changes were made to the TalkImg server settings some time ago, and maybe this add-on will work fine without the proxy.