404 Bookmarks

With this extension you can find expired bookmarks and remove them easily. You can find all kinds of broken bookmarks, like pages that return 404 (Page not found) or other HTTP errors.

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manifest.json

{
  "description": "Show and remove expired bookmarks",
  "manifest_version": 2,
  "name": "404 Bookmarks",
  "version": "1.8resigned1",
  "icons": {
    "48": "icon.svg"
  },
  "permissions": [
    "bookmarks",
    "<all_urls>"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "browser_action": {
    "default_title": "404 Bookmarks",
    "default_icon": "icon.svg"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{5f8d31ba-47fb-4b70-bf8d-d2113f6da22f}"
    }
  }
}