Use your own Images, without changing the name
Simple RPC has a full in-game config screen, accessible from ModMenu or the Mods menu in NeoForge/Forge. You will need Cloth Config installed to use it.
You can also use Direct links to PNG or GIF images to use as "image keys". To do this, upload your image to a site like IMGUR, Dropbox or GitHub and right click the image, then copy URL.
If you paste this URL into your browser and ONLY see the image, it will work. If you see a webpage, it will NOT work!
An example of this would be to upload your image to IMGUR, right clicking the image in your browser, and clicking Copy Image Url or Copy Image Address.
You can then replace your imageKey with the url.
For example:
largeImageKey = ["imagekey"] -> largeImageKey = ["https://dummysite.com/image.png"]
You can also MIX discord assets, and URL assets.
For example:
largeImageKey = ["imagekey"] -> largeImageKey = ["imagekey", "https://dummysite.com/image.png"]