No — the Internet Archive's public availability API is free and key-less.

Does this show every page being saved?

No — there's no public firehose of all saves; this checks a rotating set of major real sites for their latest real snapshot.

What is the Wayback Machine?

A real, free public service by the Internet Archive that preserves snapshots of web pages over time.

Yes — free, no download, in your browser.

What do the timestamps on the Wayback Machine mean?

Each one marks when the Archive captured the page, in a 14-digit YYYYMMDDhhmmss form. It says nothing about when the site owner last changed the content.

What does the Availability API return?

For a given URL it returns one closest archived snapshot with its link, status and timestamp, or an empty result if nothing is archived. With no timestamp supplied it returns the most recent capture.

Why would a huge website have an old snapshot?

Capture frequency varies from site to site and depends on how the Archive’s crawling reaches each page, so even popular domains can show gaps. A snapshot date tells you when the Archive last captured it, not how often the site changes.

Wayback Machine Pulse Screensaver

The Wayback Machine Pulse screensaver shows when the Wayback Machine last captured a rotating set of major websites, drawn key-less and live from the Internet Archive's public API — the internet quietly archiving itself. It's free, runs in your browser, and ESC exits.

How the Wayback Machine Pulse screensaver works

The saver checks the Internet Archive's public availability API for a rotating set of major real websites, with no key required.

Each site shows the real date and time of its most recent Wayback Machine snapshot.

The rotation cycles through a new site every few seconds.

Readings refresh on a schedule to catch newly captured snapshots.

Inside the Internet Archive's capture record

The Wayback Machine is run by the Internet Archive, a 501(c)(3) non-profit digital library whose stated goal is universal access to knowledge. It began archiving the web in 1996, and its collection grows through the Archive’s own crawling and through partner libraries and institutions that harvest sites with the Archive-It service.

The Archive publishes an Availability API: given a URL, it returns a single “closest” snapshot under archived_snapshots.closest, with the snapshot link, a status and a timestamp. Without a timestamp parameter it returns the most recent capture, and if nothing is archived it returns an empty object. Timestamps use a 14-digit YYYYMMDDhhmmss form.

That timestamp marks when the copy was captured, not when the page was last edited, so it answers “when did the Archive last look?” rather than “when did the site last change?”. Busy sites tend to be captured more often than quiet ones, and a capture may be incomplete, so the most recent snapshot is a best-effort copy.

A worked example

You might see wikipedia.org show a snapshot from moments ago, while a smaller site shows one from days back — a genuine reflection of how often each real site gets crawled.

Settings & tips

Accent recolours the snapshot timestamps.
The Internet Archive has preserved hundreds of billions of real web pages since 1996.
High-traffic sites get captured far more often than obscure ones — a real crawl-frequency signal.

Frequently asked questions

Is a key needed?: No — the Internet Archive's public availability API is free and key-less.
Does this show every page being saved?: No — there's no public firehose of all saves; this checks a rotating set of major real sites for their latest real snapshot.
What is the Wayback Machine?: A real, free public service by the Internet Archive that preserves snapshots of web pages over time.
Is it free?: Yes — free, no download, in your browser.
What do the timestamps on the Wayback Machine mean?: Each one marks when the Archive captured the page, in a 14-digit YYYYMMDDhhmmss form. It says nothing about when the site owner last changed the content.
What does the Availability API return?: For a given URL it returns one closest archived snapshot with its link, status and timestamp, or an empty result if nothing is archived. With no timestamp supplied it returns the most recent capture.
Why would a huge website have an old snapshot?: Capture frequency varies from site to site and depends on how the Archive’s crawling reaches each page, so even popular domains can show gaps. A snapshot date tells you when the Archive last captured it, not how often the site changes.

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