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Chris Bennett

Quick Tip: Force web manifest to use your tiny svg instead of larger 192x192px png

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Quick tip for 2020 web manifests, which I couldn't find anywhere else.

Wanted web manifest on Chrome/Edge to download the tiny favicon svg, instead of the larger 192x192 png it wanted to by default.
Not a big deal, but mildly annoying: 15kb (non-scalable) png vs 1.5kb (infinitely scalable) svg.
After a little head-scratching and fiddling around, came up with a solution that seems to do the trick.

  1. Declare it last, after your png fallbacks - last one that is suitable size *must* get the nod.
  2. Counter-intuitively, declare that your svg is 150x150.  

Mine isn't. Never has been, it's a scalable vector graphic.
Simply declaring it is 150x150 in the manifest is enough to get the job done.

Suspect the Chrome/Edge engine declares that any non-specified svgs are given that 150x150 size and anything else returns as a "fail".
Without declaring a size on it, or declaring it as anything other than 150x150, it just wouldn't load. 

Weird, but works, so I'm happy 😊
 

{
    "name": "Longer App/Business Name",
    "short_name": "Short Name",
    "description": "Description of App/Business",
    "start_url": "/",
    "display": "standalone",
    "background_color": "#880000",
    "theme_color": "#880000",
    "icons": [

        {
            "src": "favicon-192x192.png",
            "sizes": "192x192",
            "type": "image/png",
            "purpose": "any"
        },
        {
            "src": "favicon-512x512.png",
            "sizes": "512x512",
            "type": "image/png",
            "purpose": "any"
        },
        {
            "src": "maskable-512x512.png",
            "sizes": "512x512",
            "type": "image/png",
            "purpose": "maskable"
        },
		{
            "src": "favicon.svg",
            "sizes": "150x150",
            "type": "image/svg+xml",
            "purpose": "any"
        }
    ]
}

 

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