Examine source code of Social Fixer

{
  "manifest_version": 2,
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": false
  },
  "content_scripts": [
    {
      "matches": [
        "https://*.facebook.com/*"
      ],
      "exclude_globs": [
        "https://static.*.facebook.com/*"
      ],
      "exclude_matches": [
        "https://*.channel.facebook.com/*",
        "https://*.facebook.com/ai.php*",
        "https://*.facebook.com/connect/*",
        "https://*.facebook.com/saved/*"
      ],
      "js": [
        "x.js",
        "fx.js",
        "sfx.js",
        "/post_processor.js",
        "/bubble_note/bubble_note.js",
        "/comment_navigator/comment_navigator.js",
        "/comment_button/comment_button.js",
        "/apps/apps.js",
        "/control_panel/control_panel.js",
        "/aargh_fb_gibberish/aargh_fb_gibberish.js",
        "/debug/debug_insertion_order.js",
        "/debug/debug_post_html.js",
        "/debug/debug_post_update_tracking.js",
        "/debugger/debugger.js",
        "/donate/donate.js",
        "/disable_tooltips/disable_tooltips.js",
        "/display_tweaks/display_tweaks.js",
        "/esc_service/esc_service.js",
        "/edit_buffer/edit_buffer.js",
        "/fb_dtsg/fb_dtsg.js",
        "/external_css/external_css.js",
        "/friend_manager/friend_manager.js",
        "/font_family/font_family.js",
        "/hide/hide.js",
        "/login_page/login_page.js",
        "/logging/logging.js",
        "/mark_read/mark_read.js",
        "/menu/menu.js",
        "/messages/message_links_to_messenger.js",
        "/notify/notify.js",
        "/most_recent/most_recent.js",
        "/options/options.js",
        "/permalink_target/permalink_target.js",
        "/photo_tags/photo_tags.js",
        "/post_filters/post_filters.js",
        "/post_filters/post_tabs.js",
        "/post_font/post_font.js",
        "/regex_tester/regex_tester.js",
        "/sfx_collision/sfx_collision.js",
        "/stats/stats.js",
        "/stay_on_page/stay_on_page.js",
        "/sticky_note/sticky_note.js",
        "/storage_check/storage_check.js",
        "/subscriptions/subscriptions.js",
        "/unread_messages/unread_messages.js",
        "vue.min.js",
        "vue_sfx.js",
        "purify.min.js",
        "index.js"
      ],
      "css": [
        "style.css",
        "menu.css",
        "inline-images.css"
      ],
      "run_at": "document_start"
    }
  ],
  "description": "Social Fixer for Facebook lets you filter your news feed, hide things you don't want to see, and more!",
  "name": "Social Fixer for Facebook",
  "author": "Matt Kruse",
  "version": "31.1.0",
  "homepage_url": "https://SocialFixer.com/",
  "options_ui": {
    "page": "options.html",
    "open_in_tab": true
  },
  "page_action": {
    "default_icon": {
      "19": "icon19.png",
      "38": "icon38.png"
    },
    "default_title": "Social Fixer",
    "default_popup": "options.html"
  },
  "minimum_chrome_version": "41.0",
  "permissions": [
    "https://*.SocialFixer.com/*",
    "https://matt-kruse.github.io/*",
    "https://*.facebook.com/*",
    "storage",
    "unlimitedStorage"
  ],
  "icons": {
    "16": "icon16.png",
    "32": "icon32.png",
    "48": "icon48.png",
    "128": "icon128.png"
  },
  "applications": {
    "gecko": {
      "id": "betterfacebook@mattkruse.com",
      "strict_min_version": "48.0"
    }
  }
}