Examine source code of OCR + Translate

{
  "manifest_version": 2,
  "name": "OCR_extension",
  "version": "0.3.4",
  "description": "A browser extension working with a backend server running OCR+translation to in-place translate all images on an active tab.",
  "icons": {
    "48": "icons/language-48.png"
  },
  "browser_action": {
    "default_icon": "icons/language-48.png",
    "default_title": "OCR_translate",
    "default_popup": "popup.html"
  },
  "background": {
    "scripts": [
      "dist/background.js"
    ]
  },
  "page_action": {
    "default_icon": "icons/off.png",
    "browser_style": true
  },
  "permissions": [
    "<all_urls>",
    "activeTab",
    "tabs",
    "menus",
    "storage"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{4478e81c-ef1c-43d1-9197-fdcaf7f3d135}"
    }
  }
}