1, Pick your icon
2, Make every size
Pick a picture in step 1 first.
Makes 16, 19, 32, 38, 48, 64, 128, 512, and 1024 px, everything your manifest.json, toolbar, and the Chrome Web Store ask for.
3, Download your sizes
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One file, extension-icons.zip, with every size named by its pixel width, 16.png, 19.png, and so on.
4, Paste into your manifest
Copy didn’t work, the snippet below is selected, press Ctrl+C or Cmd+C.
Add this to your manifest.json. The paths assume the icons live in an icons/ folder next to it, rename them to match your project.
{{ manifestSnippet }} manifest.json snippet will appear here too.Everything happens on your own device, your pictures are resized right here in the browser and never uploaded anywhere.
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