Alternatively, within the Roblox Studio app under My Games, hover over the game's icon. Three dots will appear in the upper right hand corner. Click on these to see a drop-down menu from which you ...

Image format .png, .jpg, .tga, or .bmp can be uploaded to Roblox. The next step is to upload it to the platform. Head over to the Roblox Studio and select the Asset Manager option in the View tab.