Examine source code of Snippet Corpy

{
  "manifest_version": 2,
  "name": "Snippet Corpy",
  "version": "0.1.0",
  "description": "Copy code snippets from your favorite sites, on one click.",
  "homepage_url": "https://github.com/thaDev404/snippetcorpy",
  "icons": {
    "16": "images/16x16-icon.png",
    "48": "images/48x48-icon.png",
    "128": "images/128x128-icon.png"
  },
  "content_scripts": [
    {
      "css": [
        "styles/styles.css"
      ],
      "js": [
        "scripts/content.js"
      ],
      "matches": [
        "*://*.stackoverflow.com/*",
        "*://*.developer.mozilla.org/*",
        "*://*.github.com/*",
        "*://*.w3schools.com/*",
        "*://*.askubuntu.com/*",
        "*://*.stackexchange.com/*",
        "*://*.css-tricks.com/*"
      ]
    }
  ]
}