FB Hide Seen Posts

Hides seen posts in feed and removes sponsored posts

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manifest.json

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "name": "FB Hide Seen Posts",
  "manifest_version": 2,
  "version": "1.1",
  "description": "Hides seen posts in feed and removes sponsored posts",
  "permissions": [
    "<all_urls>",
    "webRequestBlocking",
    "webRequest",
    "tabs",
    "http://*.facebook.com/",
    "https://*.facebook.com/"
  ],
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": true
  },
  "content_scripts": [
    {
      "matches": [
        "*://*.facebook.com/*"
      ],
      "js": [
        "myscript.js"
      ],
      "run_at": "document_idle"
    }
  ]
}