Gmail Message Backup

{
    "update_url": "https:\/\/clients2.google.com\/service\/update2\/crx",
    "manifest_version": 3,
    "name": "Gmail Message Backup",
    "version": "1.4.1",
    "description": "Adds a download button to each Gmail message to download the original email.",
    "permissions": [
        "downloads"
    ],
    "background": {
        "service_worker": "js\/background.js"
    },
    "content_scripts": [
        {
            "matches": [
                "https:\/\/mail.google.com\/*"
            ],
            "js": [
                "js\/content.js",
                "js\/jsPDF.js",
                "js\/htmltocanvas.js",
                "js\/dompurify.js"
            ]
        }
    ],
    "host_permissions": [
        "https:\/\/mail.google.com\/",
        "https:\/\/mail-attachment.googleusercontent.com\/"
    ],
    "action": {
        "default_popup": "popup.html",
        "default_icon": {
            "16": "images\/gmaicon.png",
            "48": "images\/gmaicon2.png",
            "128": "images\/gmaicon3.png"
        }
    },
    "icons": {
        "16": "images\/gmaicon.png",
        "48": "images\/gmaicon2.png",
        "128": "images\/gmaicon3.png"
    },
    "web_accessible_resources": [
        {
            "resources": [
                "js\/content.js",
                "js\/jsPDF.js",
                "js\/htmltocanvas.js",
                "js\/dompurify.js",
                "images\/download.png"
            ],
            "matches": [
                "https:\/\/mail.google.com\/*"
            ]
        }
    ],
    "content_security_policy": {
        "extension_pages": "script-src 'self'; object-src 'self'"
    }
}