Examine source code of 𝐁𝐈𝐆 𝐏𝐏 sᴍᴏʟ ᴘᴘ

{
  "manifest_version": 2,
  "name": "𝐁𝐈𝐆 𝐏𝐏 sᴍᴏʟ ᴘᴘ",
  "description": "Replacing the regular upvote and downvote buttons in Reddit with PP and pp.",
  "version": "0.0.4",
  "icons": {
    "142": "BIG_PP.png"
  },
  "web_accessible_resources": [
    "PP.css"
  ],
  "content_scripts": [
    {
      "matches": [
        "*://*.reddit.com/",
        "*://*.reddit.com/*"
      ],
      "run_at": "document_start",
      "css": [
        "PP.css"
      ],
      "all_frames": true
    }
  ]
}