Customizing non-Steam games' thumbnails.

[Le Possum]

Regarding the thumbnails displayed in the library for launching a game, does anyone know what the format (BMP, JPG, PNG, etc) and size (in pixels) should be? This will be very useful for me to integrate the (old) non-Steam games that I still play regularly by presenting them in this way on the welcome grid. Thanks in advance !

[раб божий]

icon is 256x256 pixels and grid/cover art is 460x215 pixels. Formats are .png or .tga

[Le Possum]

Thank you very much, Enchet!

[Гоша]

очень интересно

[Гоша]

нр

[Le Possum]

For custom thumbnails, the best solution seems to be: Height: 250 pixels x Width: 125 pixels, Resolution: 300 ppi, file format: JPG. With these features, your picture will fit perfectly into Steam's library home screen grid ... without being cropped. LN59 ~;o)

[Le Possum]

Hi, Taki!

Your previous answer prompted me to look for where on my hard drive are stored these games' thumbnails (acquired or not on Steam), but all launched from my Library. Being still under Windows 7, it's the following directory:

C:\Program Files (x86)\Steam\appcache\librarycache

There, I found the answers I was looking for, including about questions that I had not yet asked myself: icon, header and logo for each game. So, a game has (or may have) 4 images in JPG format or PNG when there's an image partial transparency. The size and the resolution (ppi) don't matter because it's above all the RATIO between Height and Width that must absolutely be respected. This gives after creation in a current graphics software (and checking into Steam) some objects designated here by a generic name, which includes their dimensions in pixels:

1) mygame_library_600x900.jpg (or 300x450.jpg) intended for the Library Grid,

2) mygame_icon_32x32.jpg intended for the Desktop icon (or the Start menu),

3) mygame_header_460x215.jpg to illustrate the game's Page Top,

4) mygame_logo_160x90.png (or 320x180.png or 640x360.png, etc.) for the Logo which can be overlaid on the Header.

Here, I think I have done the trick ...
Protect Yourself as well as possible, as well as Yours.
And thank You very much again for Your kind indications!
LN59

[Le Possum]

5 / 5

[Ogami]

Btw, if you did not know it yet, there is a whole website dedicated to collecting custom made covers, backgrounds, icons and so on for the new Steam library.
Even animated covers are possible.

https://www.steamgriddb.com/

You can also upload your own creations for other users.

[Le Possum]

Thanks, Ogami. Nice advice, and very useful!