Chrome Extension Icon Manifest
It should be:
{
"manifest_version": 2,
"name": "Demo",
"description": "This is demo.",
"version": "1.0",
"icons": {
"16": "icon16.png",
"48": "icon48.png",
"128": "icon128.png"
},
"browser_action": {
"default_popup": "popup.html"
},
"permissions": ["activeTab", "storage"]
}
See: Chrome Extension Manifest Docs
Set "icons"
key in manifest.json
.
The browser_action.icons
key is what gets displayed in the toolbar (and will probably only use 16, 24, and 32 sized images, see browserAction).
The one displayed in chrome://extensions
is a top level icons
key. In the manifest documentation, look for the 6th entry, so that your manifest has an top-level entry, like:
{
"icons": {
"16": "icon16.png",
"48": "icon48.png",
"128": "icon128.png"
}
}