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.

Wayback Machine - Firefox Add-on for Web History & Archiving

'Wayback Machine' is a Firefox Browser Extension designed by the Official Internet Archive. It allows users to travel back in time to view how websites have changed throughout internet history. Moreover, it enables users to save current pages, view missing 404 Not Found pages, and even read archived books and academic papers. It also displays a count of snapshots of the current page stored in the Wayback Machine and provides relevant resources including research papers and books.
Download
View on Firefox Browser Add-ons

Add-on stats

Users: 35,134
123
Rating: 4.04
(333)
Version: 3.2 (Last updated: 2023-01-05)
Creation date: 2016-06-23
Weekly download count: 749
Firefox on Android: No
Risk impact: Very high risk impact
Risk likelihood:
Very low risk likelihood
Manifest version: 2
Permissions:
  • activeTab
  • cookies
  • contextMenus
  • notifications
  • storage
  • webRequest
  • webRequestBlocking
  • https://archive.org/*
  • https://*.archive.org/*
  • https://hypothes.is/*
    • See more
Size: 1.37M

Ranking

# 395 ▲ 1
Other rankings
Upgrade to see more rankings

Other platforms

Wayback Machine (v3.4.2)
4.23 (293) 300,000
Not available on Android
Wayback Machine (v3.3.1)
4.80 (6) 22,471
Want to check extension ranking and stats more quickly for other Firefox add-ons? Install Chrome-Stats extension to view Firefox-Stats data as you browse the Firefox Browser Add-ons.

Add-on summary

Analyze keywords

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.

Most features will work without requiring an account including Save Page Now.

Some features must be enabled from Settings. Turn on Private Mode to prevent automatic sending of data and to protect your privacy while browsing.

Features

• Save Page Now - Instantly save the page you are currently viewing in the Wayback Machine. Turn on Auto Save Page in settings to save pages that have not previously been saved, or Auto Save Bookmarks to save when bookmarking a page. Works while logged out, or log in for additional options.

• Oldest, Newest & Overview - View the first version of a page or the most recently saved in the Wayback Machine. Or view a calendar overview of all archived pages. Can also use by right-clicking over a page or link.

• Wayback Machine Count - Display a count of snapshots of the current page stored in the Wayback Machine over the toolbar icon, and the date of last save in the popup.

• 404 Not Found - When an error occurs, automatically check if an archived copy is available. Checks against 4xx & 5xx HTTP error codes.

See more

User reviews

These summaries are automatically generated weekly using AI based on recent user reviews. Firefox Browser Add-ons does not verify user reviews, so some user reviews may be inaccurate, spammy, or outdated.
Pros
  • Essential addon for preserving a free and open internet for future generations
  • Internet archive is doing God's work
  • Important tool that is highly valued by users
Cons
  • 'Save Page Now' functionality is often unreliable
  • Users encounter errors indicating they need to be logged in despite being logged in
  • Issues appear to be related to the server API
Most mentioned
  • Spotty functionality of 'Save Page Now'
  • Importance of the tool for internet preservation
  • Errors related to user login status
User reviews
by Firefox user 13262737, 2025-01-16
by Firefox user 18678707, 2025-01-15
by Lawrence, 2025-01-14
View all user reviews

Add-on safety

Risk impact

Wayback Machine requires a lot of sensitive permissions. Exercise caution before installing.

Risk likelihood

Wayback Machine has earned a good reputation and can be trusted.

Upgrade to see risk analysis details