Wayback Machine

Welcome to the Official Internet Archive Wayback Machine Browser Extension! Go back in time to see how a website has changed through the history of the Web. Save websites, view missing 404 Not Found pages, or read archived books & papers.

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Wayback Machine is available to install from Firefox Browser Add-ons and for download from this page. It has 29,642 active users The latest version is 3.2, and it was published a year ago.

All available versions

You can find the current and older versions of Wayback Machine here. You can download the archived versions or inspect their source codes.

As a free user, you can only download the latest version.

How to install Wayback Machine from an XPI file

1. Simply drag-and-drop the XPI into Firefox to install the add-on.

How to install Wayback Machine from a ZIP file

1. Download the Wayback Machine ZIP file
2. In Firefox browser, go to about:addons to open Add-ons Manager
3. Click on , then select Install Add-on From File
4. Select the Wayback Machine ZIP file from step 1. Wayback Machine is now installed on your browser.