過去ページチェッカー is a Chrome extension that allows you to explore the past of any webpage you are currently viewing. With this extension, you can access the historical update records of the page, giving you the ability to traverse websites in a chronological order. Whether you want to browse closed websites or retrieve content that was once available, this extension can help you uncover valuable information.

This extension works in collaboration with WebArchive, a platform that stores past web pages and files. By leveraging WebArchive's database, 過去ページチェッカー provides users with the opportunity to access information and data that may no longer be publicly available.

Using 過去ページチェッカー is simple. Just open the webpage you want to explore the past of, right-click, and select "過去ページチェック" from the menu. This will open the WebArchive interface, where you can click on highlighted dates to view the page as it existed in the past.