Examine source code of spFilterWebContent

{
  "manifest_version": 2,
  "name": "spFilterWebContent",
  "description": "watch and block webrequests of the browser",
  "author": "terriskator",
  "version": "4.2.35",
  "browser_action": {
    "default_icon": {
      "16": "spFilterWebContent.logo.016.png",
      "32": "spFilterWebContent.logo.032.png",
      "64": "spFilterWebContent.logo.064.png",
      "128": "spFilterWebContent.logo.128.png"
    },
    "browser_style": true,
    "default_title": "spFilterWebContent"
  },
  "permissions": [
    "downloads",
    "tabs",
    "webRequest",
    "webRequestBlocking",
    "storage",
    "<all_urls>"
  ],
  "background": {
    "scripts": [
      "spFilterWebContent.background.js"
    ]
  },
  "options_ui": {
    "page": "spFilterWebContent.options.html",
    "browser_style": true
  },
  "browser_specific_settings": {
    "gecko": {
      "strict_min_version": "138.0",
      "id": "{3a75c1ed-e86b-4b84-a28e-ce6a6d63166a}"
    },
    "gecko_android": {
      "strict_min_version": "138.0"
    }
  },
  "icons": {
    "16": "spFilterWebContent.logo.016.png",
    "32": "spFilterWebContent.logo.032.png",
    "64": "spFilterWebContent.logo.064.png",
    "128": "spFilterWebContent.logo.128.png",
    "256": "spFilterWebContent.logo.256.png"
  }
}