Electron-builder: Multiple icons for Windows?

[JohnWeisz]

Version: 18.6.2
Target: --win --x64

Thanks for maintaining electron-builder, it's a very valuable asset!

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I have linked the required 256x256 .ico file for win and electron-builder runs flawlessly and packs my app with the correct icons.

However, 256x256 is way too much for some display locations, such as the app window frame header, where it looks very noisy and low quality (as one would expect from jamming a 256x256 icon into a 16x16 display box).

To avoid this, I would like to include multiple icon sizes, such as 16x16, 32x32, and so on. How can I do this? I tried the following file-names, but it has no effect on Windows builds:

icon.ico (256x256)
16x16.ico
32x32.ico
...

[SimulatedGREG]

@JohnWeisz

The *.ico filetype can be used for a variety of sizes all in one file. It can almost be thought of like a small archive of icons. So instead of trying to use multiple *.ico files (which won't work), just use something like GIMP or ConvertICO to create a set of icons in 1 *.ico file.

Related: https://graphicdesign.stackexchange.com/questions/17257/creating-an-ico-file-with-multiple-sizes-web-application

[JohnWeisz]

@SimulatedGREG

So essentially it's like mip-maps in .dds files. Thank you for your help.

[sdegutis]

Can a build phase be added into Electron Builder that converts multiple icons (e.g. when given via icons key as array of filenames) into an .ico file, instead of having this be a separate manual step?