WebMasterTools: Bulk Outdated Content Removal is a Chrome extension developed by lihster.developer. It falls under the category of Browsers and is specifically categorized as an Add-ons & Tools extension. This free extension simplifies the process of removing outdated content from Google Webmaster Tools.

With this extension, you no longer need to manually enter individual URLs one by one. Instead, you can create a list of outdated URLs to be removed and store them in a file. The extension then performs Google Webmaster Tools' "remove outdated content" against the list of URLs.

Please note that if nothing happens when you use the extension, you may need to refresh the page and try again. Additionally, make sure your language settings are set to English.