Archive.today can capture individual pages in response to explicit user requests. Since its beginning, Archive.Today has supported crawling pages with URLs containing a now-deprecated hash-bang fragment (#!).
Archive.today records only text and images, excluding XML, RTF, spreadsheet (xls or ods) and other non-static content. However, videos for certain sites, like Twitter, are saved. It keeps track of the history of snapshots saved, returning to the user a request for confirmation before adding a new snapshot of an already saved Internet address.
Web pages cannot be duplicated from archive.is to web.archive.org as second-level backup, as archive.is places an exclusion for Wayback Machine and does not save its snapshots in WARC format. The reverse—from web.archive.org to archive.is—is possible, but the copy usually takes more time than a direct capture. Some web sites get deleted from Internet Archive's listings retroactively or blocked from being saved due to their robots.txt file, but Archive.today does not use this.
The research toolbar enables advanced keywords operators, using * as the wildcard character. A couple of quotation marks address the search to an exact sequence of keywords present in the title or in the body of the webpage, whereas the insite operator restricts it to a specific Internet domain.
Once a web page is archived, it cannot be deleted directly by any Internet user.
Removing advertisements, popups or expanding links from archived pages is possible by asking the owner to do it on his blog.
While saving a dynamic list, archive.today searchbox shows only a result that links the previous and the following section of the list (e.g. 20 links for page). The other web pages saved are filtered, and sometimes may be found by one of their occurrences.
The search feature is backed by Google CustomSearch. If it delivers no results, archive.is attempts to utilize Yandex Search.
If a page has already been archived, archive.is asks the user to confirm archiving a new revision, instead of immediately archiving it.
While loading a page, a list of URLs to individual page elements among their content sizes, HTTP statuses and MIME types is shown. This list can only be viewed during the crawling process.
One can download archived pages as a ZIP file, except pages archived since 29 November 2019,[update] when archive.today changed their browser engine from PhantomJS to Chromium.
In March 2019, the site was blocked for six months by several Australian internet providers in the aftermath of the Christchurch mosque shootings in an attempt to limit distribution of the footage of the attack. It has since been unblocked.
On 21 July 2015, the operators blocked access to the service from all FinnishIP addresses, stating on Twitter that they did this in order to avoid escalating a dispute they allegedly had with the Finnish government. It has since been unblocked.
As of May 2018, it has not been possible to reach the site when using Cloudflare's 220.127.116.11DNS service. Cloudflare staff have stated that the problem is on the end of archive.today, as its authoritative nameservers return invalid records when queried from within Cloudflare's network because Archive.today returns invalid data to DNS requests coming via Cloudflare's DNS servers. Archive.today's reasoning for this is the fact Cloudlfare does not send EDNS Client Subnet information in its DNS requests.