Gmail Sender Icons

{
    "update_url": "https:\/\/clients2.google.com\/service\/update2\/crx",
    "manifest_version": 3,
    "name": "Gmail Sender Icons",
    "author": "Digital Inspiration",
    "homepage_url": "https:\/\/digitalinspiration.com\/",
    "description": "Quickly identify the sender of email messages in Gmail without opening the message.",
    "version": "4.0",
    "permissions": [
        "storage",
        "scripting"
    ],
    "host_permissions": [
        "https:\/\/mail.google.com\/"
    ],
    "content_scripts": [
        {
            "matches": [
                "https:\/\/mail.google.com\/*"
            ],
            "js": [
                "content.js"
            ],
            "css": [
                "styles.css"
            ],
            "run_at": "document_end"
        }
    ],
    "background": {
        "service_worker": "background.js"
    },
    "web_accessible_resources": [
        {
            "resources": [
                "*.map"
            ],
            "matches": [
                "https:\/\/mail.google.com\/*"
            ]
        }
    ],
    "short_name": "GmailSenderIcons",
    "action": {
        "default_icon": "icon.png",
        "default_title": "Show sender icons in Gmail",
        "default_popup": "settings.html"
    },
    "icons": {
        "32": "icon.png",
        "64": "icon.png",
        "128": "icon.png",
        "256": "icon.png"
    }
}