Dual Page Sync

{
    "update_url": "https:\/\/clients2.google.com\/service\/update2\/crx",
    "manifest_version": 3,
    "name": "Dual Page Sync",
    "description": "Open two different URLs or parts of the same URL side by side",
    "version": "2.0",
    "action": {
        "default_popup": "popup.html",
        "default_icon": {
            "16": "icon.png"
        }
    },
    "permissions": [
        "tabs",
        "storage",
        "declarativeNetRequestWithHostAccess"
    ],
    "host_permissions": [
        "<all_urls>"
    ],
    "icons": {
        "16": "icon.png"
    },
    "background": {
        "service_worker": "background.js"
    },
    "content_scripts": [
        {
            "matches": [
                "<all_urls>"
            ],
            "js": [
                "content_script.js"
            ],
            "run_at": "document_start",
            "all_frames": true
        }
    ]
}