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Learn how to Get Extension Manifest Info


Engaged on an internet extension could be kinda wild — on one aspect you are primarily simply coding a web site, on the opposite aspect you are restricted to what the browser says you are able to do within the extension execution surroundings. One change in that surroundings is coming January 2023 — pushing extensions to maneuver to manifest model 3. I not too long ago bought inquisitive about whether or not different well-liked extensions had accomplished the model 3 replace.

Executing the next command within the background web page (manifest model 2) or service employee (model 3) will present you the extension’s manifest:

chrome.runtime.getManifest()

The getManifest name returns a big object detailing the extension’s manifest. Here is what you’d see for the MetaMask browser extension:

{
    "creator": "https://metamask.io",
    "background": {
        "web page": "background.html",
        "persistent": true
    },
    "browser_action": {
        "default_icon": {
            "16": "pictures/icon-16.png",
            "19": "pictures/icon-19.png",
            "32": "pictures/icon-32.png",
            "38": "pictures/icon-38.png",
            "64": "pictures/icon-64.png",
        },
        "default_popup": "popup.html",
        "default_title": "MetaMask"
    },
    "instructions": {
        "_execute_browser_action": {
            "suggested_key": {
                "chromeos": "Alt+Shift+M",
                "linux": "Alt+Shift+M",
                "mac": "Alt+Shift+M",
                "home windows": "Alt+Shift+M"
            }
        }
    },
    "content_scripts": [
        {
            "all_frames": true,
            "js": [
                "disable-console.js",
                "globalthis.js",
                "lockdown-install.js",
                "lockdown-run.js",
                "lockdown-more.js",
                "contentscript.js"
            ],
            "matches": [
                "file://*/*",
                "http://*/*",
                "https://*/*"
            ],
            "run_at": "document_start"
        }
    ],
    "current_locale": "en_US",
    "default_locale": "en",
    "description": "An Ethereum Pockets in your Browser",
    "externally_connectable": {
        "ids": [
            "*"
        ],
        "matches": [
            "https://metamask.io/*"
        ]
    },
    "icons": {
        "16": "pictures/icon-16.png",
        "19": "pictures/icon-19.png",
        "32": "pictures/icon-32.png",
        "38": "pictures/icon-38.png",
        "48": "pictures/icon-48.png",
        "64": "pictures/icon-64.png",
    },
    "manifest_version": 2,
    "minimum_chrome_version": "66",
    "title": "MetaMask",
    "permissions": [
        "storage",
        "unlimitedStorage",
        "clipboardWrite",
        "http://localhost:8545/",
        "https://*.infura.io/",
        "https://lattice.gridplus.io/*",
        "activeTab",
        "webRequest",
        "*://*.eth/",
        "notifications"
    ],
    "short_name": "MetaMask",
    "update_url": "https://clients2.google.com/service/update2/crx",
    "model": "10.16.1"
}

Lots of internet extensions are nonetheless utilizing manifest model 2, so many extension builders are pushing to complete manifest model 3 work!


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