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Wayback Machine
The Wayback Machine is a digital archive of the World Wide Web founded by the Internet Archive, an American nonprofit organization based in San Francisco, California. Launched for public access in 2001, the service allows users to go "back in time" to see how websites looked in the past. Founders Brewster Kahle and Bruce Gilliat developed the Wayback Machine to provide "universal access to all knowledge" by preserving archived copies of defunct web pages.
The Wayback Machine's earliest archives go back at least to 1995, and by the end of 2009, more than 38.2 billion webpages had been saved. As of October 2025[update], the Wayback Machine has archived more than 1 trillion web pages and well over 99 petabytes of data.
The Internet Archive has been archiving cached web pages since at least 1995. One of the earliest known pages was archived on May 8, 1995.
Internet Archive founders Brewster Kahle and Bruce Gilliat launched the Wayback Machine in San Francisco, California, in October 2001, primarily to address the problem of web content vanishing whenever it gets changed or when a website is shut down. The service enables users to see archived versions of web pages across time, which the archive calls a "three-dimensional index". Kahle and Gilliat created the machine hoping to archive the entire Internet and provide "universal access to all knowledge". The name "Wayback Machine" is a reference to a fictional time-traveling device in the animated cartoon The Adventures of Rocky and Bullwinkle and Friends from the 1960s. In a segment of the cartoon entitled "Peabody's Improbable History", the characters Mister Peabody and Sherman use the "Wayback Machine" to travel back in time to witness and participate in famous historical events.
From 1996 to 2001, the information was kept on digital tape, with Kahle occasionally allowing researchers and scientists to tap into the "clunky" database. When the archive reached its fifth anniversary in 2001, it was unveiled and opened to the public in a ceremony at the University of California, Berkeley. By the time the Wayback Machine launched, it already contained over 10 billion archived pages. The data is stored on the Internet Archive's large cluster of Linux nodes. It revisits and archives new versions of websites on occasion (see technical details below). Sites can also be captured manually by entering a website's URL into the search box, provided that the website allows the Wayback Machine to "crawl" it and save the data.
On October 30, 2020, the Wayback Machine began fact-checking content. As of January 2022, domains of ad servers are disabled from capturing.
In May 2021, for Internet Archive's 25th anniversary, the Wayback Machine introduced the "Wayforward Machine", which allows users to "travel to the Internet in 2046, where knowledge is under siege".
On July 24, 2025, Senator Alex Padilla designated the Internet Archive as a federal depository library.
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Wayback Machine AI simulator
(@Wayback Machine_simulator)
Wayback Machine
The Wayback Machine is a digital archive of the World Wide Web founded by the Internet Archive, an American nonprofit organization based in San Francisco, California. Launched for public access in 2001, the service allows users to go "back in time" to see how websites looked in the past. Founders Brewster Kahle and Bruce Gilliat developed the Wayback Machine to provide "universal access to all knowledge" by preserving archived copies of defunct web pages.
The Wayback Machine's earliest archives go back at least to 1995, and by the end of 2009, more than 38.2 billion webpages had been saved. As of October 2025[update], the Wayback Machine has archived more than 1 trillion web pages and well over 99 petabytes of data.
The Internet Archive has been archiving cached web pages since at least 1995. One of the earliest known pages was archived on May 8, 1995.
Internet Archive founders Brewster Kahle and Bruce Gilliat launched the Wayback Machine in San Francisco, California, in October 2001, primarily to address the problem of web content vanishing whenever it gets changed or when a website is shut down. The service enables users to see archived versions of web pages across time, which the archive calls a "three-dimensional index". Kahle and Gilliat created the machine hoping to archive the entire Internet and provide "universal access to all knowledge". The name "Wayback Machine" is a reference to a fictional time-traveling device in the animated cartoon The Adventures of Rocky and Bullwinkle and Friends from the 1960s. In a segment of the cartoon entitled "Peabody's Improbable History", the characters Mister Peabody and Sherman use the "Wayback Machine" to travel back in time to witness and participate in famous historical events.
From 1996 to 2001, the information was kept on digital tape, with Kahle occasionally allowing researchers and scientists to tap into the "clunky" database. When the archive reached its fifth anniversary in 2001, it was unveiled and opened to the public in a ceremony at the University of California, Berkeley. By the time the Wayback Machine launched, it already contained over 10 billion archived pages. The data is stored on the Internet Archive's large cluster of Linux nodes. It revisits and archives new versions of websites on occasion (see technical details below). Sites can also be captured manually by entering a website's URL into the search box, provided that the website allows the Wayback Machine to "crawl" it and save the data.
On October 30, 2020, the Wayback Machine began fact-checking content. As of January 2022, domains of ad servers are disabled from capturing.
In May 2021, for Internet Archive's 25th anniversary, the Wayback Machine introduced the "Wayforward Machine", which allows users to "travel to the Internet in 2046, where knowledge is under siege".
On July 24, 2025, Senator Alex Padilla designated the Internet Archive as a federal depository library.