Also, if you're completely new to modding, you might benefit by starting with this topic: [GUIDE] [126.96.36.199] Getting started with modding.
Everyone who's new to modding might reach the point where they kicks their heads against the walls in rage over not being able to have the ingame mod manager recognise their mod icon, me included. So therefore do I want to make the relevant information a lot easier for newbies to find by making this guide thing. Calling this a guide might be an insult to the guide genre, so I apologise for doing it. But anyway...
When thinking of making a mod icon/image, you should start with deciding if the mod is to be uploaded to the Steam Workshop, or not. The reason is simple: The required icon resolution for the workshop is far bigger than the required resolution for the mod manager, so in my opinion the most effective work order is to make the icon for the workshop first, and simply copy it and decrease the size for having it fitting the requirement for the ingame mod manager. If you do not plan to upload to the workshop, you can simply skip that part of this guide.
Mod icon to Steam Workshop:
First, here's the current requirements for Steam Workshop:
- Resolution: 640 pixels width x 360 pixels height
- Maximum filesize: 1 megabyte
Mod icon to mod in /mod/:
Now, we've reached the optional mod icon that is a must for all mods: A mod icon that shows up in the mod manager when the mod is contained in the /mod/ folder.
More specifically each mod consists of a folder containing at least:
- The modified file(s) in correct folder hierarchy
- Mod description
- Mod icon
- Resolution: 276 pixels width x 162 pixels height
- Maximum filesize: 20 kilobytes
- The mod icon is within the limitations mentioned.
- The mod icon is in the folder for the particular mod
- The mod icon is correctly addressed in manifest.sii
Useful relevant threads and SCS modding wiki articles:
Image in mod manager
[Guide][1.24+] Create a Paint Icon for Paintjob
Using the manifest.sii