Last Updated Checker
Check when a website was last updated. Paste any public URL and we’ll read every reliable signal — the Last-Modified header, modified-date meta tags, structured data, and the site’s sitemap — and tell you how much to trust each one.
How to check when a web page was last updated
Why there's often no single answer
Many pages don't expose a real "last updated" date. Static sites and CMS-driven pages usually do; app-rendered or heavily dynamic pages frequently return today's date on every request, or none at all. A good check looks at several signals and tells you how much to trust each — which is exactly what the tool above does.
1. The Last-Modified HTTP header
When your browser requests a page, the server can send a Last-Modified response header. It's a genuine signal for static files, but many servers return the current time for dynamic pages — so treat it as a hint, not proof. The tool reads this header for you; you can also see it in your browser's Network tab.
2. Modified-date meta tags
Content-managed pages often embed the edit date in the HTML: article:modified_time, og:updated_time, or a last-modified meta tag. These are usually reliable because a CMS writes them when an author saves. The tool extracts them from the page source automatically.
3. Structured data (schema.org dateModified)
Pages that use JSON-LD structured data (common on blogs and news) include a dateModified field. Search engines read this, and so does the tool. When present, it's one of the most trustworthy signals available.
4. The XML sitemap's <lastmod>
Most sites publish a /sitemap.xml listing their pages, each with a <lastmod> date. It reflects when the site owner says the page last changed. The tool looks up your exact URL in the sitemap when one is available.
5. The Wayback Machine (for history)
To see how a page looked at past points in time — not just its latest change — the Internet Archive's Wayback Machine keeps dated snapshots. It's the best way to confirm whether and when real content changed, rather than relying on a self-reported date.
Frequently asked questions
How accurate is the last-updated date?
It depends on the page. Modified-date meta tags and schema.org dateModified are usually reliable. The Last-Modified header and sitemap dates are decent hints but can be wrong on dynamic sites. That's why the tool shows every signal it finds, each with a confidence level, rather than inventing one number.
Why does it say no date is available?
Some pages genuinely don't expose one — app-rendered pages and dynamic sites often send no reliable modified date. Rather than fake a result, the tool tells you honestly when there's nothing trustworthy to report.
Can I check any website?
You can check any public web page. Pages behind a login, paywall, or that block automated requests can't be checked. The tool only fetches public, non-authenticated pages and respects robots.txt.
Does Google's cache still work for this?
No. Google retired its public cache feature in 2024, so the old "check Google's cached copy" trick no longer works. The Wayback Machine is now the best way to see a page's history.
How do I get notified when a page actually changes?
This tool is a one-time check. If you want to be told automatically when a competitor's page changes — in plain English, without watching a dashboard — that's exactly what TrailWatch does: it checks daily and emails you a low-noise weekly digest.
Want to know the moment it changes?
A one-time check tells you the past. TrailWatch watches competitor pages for you — daily — and emails one plain-English digest a week on what actually changed. AI summaries on every plan, even free.
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