manifest.json

{

  "description": "Center the content of the frequently used web pages.",
  "manifest_version": 2,
  "name": "Fox in the middle",
  "version": "0.1.50",
  "homepage_url": "https://github.com/agiUnderground/fox-in-the-middle",
  "icons": {
    "48": "icons/fox-in-the-middle-48.png"
  },

  "content_scripts": [
    {
      "matches": ["*://*.google.com/*"],
      "js": ["fox_google.js"]
    },
    {
      "matches": ["*://*.ietf.org/rfc/*"],
      "js": ["fox_ietf.js"]
    },
    {
      "matches": ["*://*.rfc-editor.org/rfc/*"],
      "js": ["fox_rfc_editor_org.js"]
    },
    {
      "matches": ["*://*.rfc-editor.org/rfc/"],
      "js": ["fox_rfc_editor_org_root.js"]
    },
    {
      "matches": ["*://*.lore.kernel.org/*"],
      "js": ["fox_lore_kernel_org.js"]
    },
    {
      "matches": ["*://*.docs.python.org/*"],
      "js": ["fox_docs_python_org.js"]
    },
    {
      "matches": ["*://docs.kernel.org/*"],
      "js": ["fox_docs_kernel_org.js"]
    },
    {
      "matches": ["*://man.freebsd.org/cgi/man.cgi?*"],
      "js": ["fox_man_freebsd_org.js"]
    },
    {
      "matches": ["*://linux.die.net/man/*"],
      "js": ["fox_die_net.js"]
    },
    {
      "matches": ["*://man7.org/linux/man-pages/*"],
      "js": ["fox_man7_org.js"]
    },
    {
      "matches": ["*://duckduckgo.com/*"],
      "js": ["fox_duckduckgo_com.js"]
    },
    {
      "matches": ["*://*.openssh.com/txt/*"],
      "js": ["fox_openssh_com.js"]
    },
    {
      "matches": ["*://man.openbsd.org/*"],
      "js": ["fox_man_openbsd_org.js"]
    },
    {
      "matches": ["*://man.dragonflybsd.org/*"],
      "js": ["fox_man_dragonflybsd_org.js"]
    }
  ]
}