An archived website may not look or perform the way you expect. Here are some limitations of web archiving that you should keep in mind:

• Archived websites on the Wayback Machine and Archive-It often take a longer time to load than a live site. Wait a little longer than you normally would to make sure everything has loaded.
• Certain features are difficult or impossible to archive fully. For example, anything that would require a site to ping a live server, such as performing a search or logging in, won't work on an archived site. Another example is Flash animations, which were a very common web design element in the 2000s. Since Flash isn't supported by modern browsers, Flash elements of websites might not display correctly.
• Some outbound links on an archived site may not work if the linked site was not also crawled.
• Sites that employ a robots.txt file will not be crawled by the Wayback Machine. Archive-It can override robots.txt exclusions.

If the archived site you're viewing is incomplete, make sure you check if there are other crawls available. A different crawl may have more content.

The Wayback Machine and Archive-It both use web crawlers to archive content. In some cases, an alternative approach such as Webrecorder may be able to capture content that a crawler would miss.