Website Change Checker

Paste the URL and the checker fetches the page, strips out scripts, styles, and markup, and hashes the remaining visible text into a content fingerprint. It saves that fingerprint in your browser, so when you check the same URL again it compares the two: if the fingerprint differs, the page changed since your last check; if it matches, nothing meaningful changed. Nothing is stored on our servers, and the baseline lives only in the browser you checked from.

Yes, completely free and with no sign-up. You can check any public URL on demand as often as you like. It runs on demand from your browser rather than continuously, so it is best for spot-checks. For hands-off monitoring that watches a page around the clock and emails you when it changes, use SiteGauge's free plan.

The fingerprint is based on the page's visible text, so a change you cannot see at a glance still counts: an updated price, a swapped headline, a new item in a list, or a rotating quote or timestamp the site injects on every load. Pages with live counters, A/B tests, or randomised content can therefore read as changed each time. To track only meaningful changes and filter out that kind of noise automatically, set up ongoing monitoring, which scores each change before alerting you.

This tool checks on demand, from the browser you are using. To have a page watched automatically, add it to SiteGauge: it re-checks on your schedule from the cloud, renders JavaScript, keeps full history, and alerts you by email, Slack, Teams, or webhook the moment the page changes, with an AI summary of what changed and how important it is.

No. The checker makes a single standard HTTP request for the page, the same kind a browser makes when you visit it. It does not log in, submit anything, or identify you to the site.