By default chromium adds a margin of 8px around img tags, causing the image in the splashscreen to shrink to fit in its parent browserwindow that is set with the image's dimensions, making it blurry.

A fix would be to add margin: 0 in the style of the img here:
https://github.com/ElectronNET/Electron.NET/blob/master/ElectronNET.Host/splashscreen/index.html

• Version: 13.5.1
• Target: net5.0

Steps to Reproduce:

1. Put image in electron.manifest.json:

"splashscreen": {
    "imageFile": "my-image.png"
  },

2. Build and run app