mue/manifest/chrome.json

{
    "manifest_version": 2,
    "offline_enabled": true,
    "name": "Mue",
    "description": "Fast, open and free-to-use new tab page for most modern browsers.",
    "version": "0.6",
    "browser_action": {
        "default_icon": "./android-chrome-512x512.png"
    },
    "chrome_url_overrides": {
        "newtab": "index.html"
    }
}