Examine source code of Feedless

{
  "manifest_version": 3,
  "name": "Feedless",
  "description": "Hides feeds and recommended content on Pinterest and Instagram so you can focus on creating.",
  "version": "2.0",
  "icons": {
    "48": "icon48.png",
    "96": "icon96.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "pinfocus@noahdev",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "content_scripts": [
    {
      "js": [
        "content-script.js"
      ],
      "css": [
        "content-style.css"
      ],
      "run_at": "document_start",
      "matches": [
        "https://*.pinterest.com/*",
        "https://*.instagram.com/*"
      ]
    }
  ]
}