Login Screen - LlemonDuck/runelite GitHub Wiki
Login Screen Configuration

Settings
Ctrl-V Paste
Enables Ctrl-V Paste for Login, Password, and Authenticator fields.
Custom Background
Enables past or custom login screens.
To use your own custom background, set Custom Background to Custom and place login.png in %userprofile%\.runelite on Windows or ~/.runelite/ on Linux/MacOS.
An image size of 765 x 503 is recommended, but bigger images will be (simply) scaled down automatically.
Display Fire
Configures whether to show/hide the fire animation on the login screen.
Sync Username
Saves your username, allowing it to be synced with the cloud and across multiple PCs. Requires you to be signed in with the Account plugin.