Examine source code of Tumblr Post

{
  "manifest_version": 2,
  "name": "__MSG_extensionName__",
  "description": "__MSG_extensionDescription__",
  "version": "2.0.5resigned1",
  "default_locale": "en",
  "applications": {
    "gecko": {
      "id": "{99210d54-6321-41e8-bd1b-2b4c55874efb}",
      "strict_min_version": "54.0"
    }
  },
  "icons": {
    "48": "icons/tumblr-48.png"
  },
  "options_ui": {
    "page": "options/options.html",
    "browser_style": true
  },
  "browser_action": {
    "browser_style": true,
    "default_icon": "icons/tumblr-32.png",
    "default_title": "__MSG_extensionName__",
    "default_popup": "popups/browser-action.html"
  },
  "background": {
    "scripts": [
      "libs/oauth/sha1.js",
      "libs/oauth/oauth.js",
      "helpers/storage-helper.js",
      "background.js"
    ]
  },
  "permissions": [
    "activeTab",
    "tabs",
    "contextMenus",
    "storage",
    "notifications",
    "webRequest",
    "webRequestBlocking",
    "https://www.tumblr.com/oauth/*",
    "https://api.tumblr.com/v2/*",
    "https://tumblrpost/oauth-callback/"
  ]
}