Appropriate properties of logo.png, logo-mobile.png and favicon.png

I’m trying to customize Openremote.
Can you indicate to me the appropriate properties of logo.png, logo-mobile.png, and favicon.png files?
Best regards

Hi, I guess you mean the size?

logo.png: 300 high and as wide as you want the logo to be
logo-mobile: 154 x 154
favicon: 48 x 48

that’s it.
Thanks for your help.