Examine source code of Timestripe for Firefox

{
  "manifest_version": 2,
  "name": "Timestripe for Firefox",
  "version": "1.2",
  "description": "Instant access to Timestripe using Side View. Plan goals for yourself and your team without leaving your current tab.",
  "permissions": [
    "https://timestripe.com/webview-chrome-extension/*",
    "activeTab",
    "tabs",
    "webRequest",
    "webRequestBlocking"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "browser_action": {
    "default_icon": {
      "256": "icons/timestripe-logo-351.png"
    },
    "default_title": "Timestripe",
    "default_popup": ""
  },
  "sidebar_action": {
    "default_icon": {
      "256": "icons/timestripe-logo-351.png"
    },
    "default_title": "Timestripe",
    "default_panel": "sidebar.html"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{f36fc055-8ed6-4c58-98d3-6ac30db7da9c}"
    }
  },
  "data_collection_permissions": {
    "activeTab": "not-collected",
    "tabs": "not-collected",
    "webRequest": "not-collected",
    "webRequestBlocking": "not-collected"
  }
}