WebsiteChange

Page change monitor that shows you the difference

Words tell you what a page says. A screenshot tells you what a visitor sees. WebsiteChange works as a page change monitor on both levels: every check stores a full-page screenshot next to the text, and the visual diff highlights the exact areas that look different from the last version.

Two printed screenshots of a web page side by side with a changed banner area circled in red

A full-page screenshot on every check

Each check renders the public page like a browser and captures it from the top of the header to the bottom of the footer. Not just the first screen and not a cropped thumbnail.

  • The screenshot is stored with the text and the HTML structure of the same check.
  • It is kept for as long as your plan keeps history: 6 months on Starter, 2 years on Growth, 5 years on Business and unlimited on Enterprise.
  • If you watch one element, the monitor still stores the full page and also frames the element you picked.

You get a picture of the page for every point in time, which is often what a manager or a lawyer asks for first.

Visual diff highlighting

When two screenshots differ, the changed areas are outlined and shaded on the newer image. You can switch between three views.

  • Side by side, the old screenshot on the left and the new one on the right.
  • Overlay, with a slider that wipes from the old version to the new one.
  • Highlight, the new screenshot with every changed region marked.

Small shifts that come from fonts loading a little later or a counter ticking are filtered out, just like on the text layer. Regions you know are noisy, such as a live chat bubble or a rotating promo strip, can be excluded with an ignore region.

When the picture matters more than the words

Text comparison is precise, and for contracts, policies and release notes it is the layer to trust. Some of the most important edits, though, barely touch the text.

In each case the visual diff makes the change obvious in one glance, and the AI summary describes it in one line.

  • A competitor moves its cheapest plan from the first column to the last, and the order changes what buyers see first.
  • A "Most popular" badge jumps from one plan to another.
  • A hero image switches from a product shot to a photo of a team, signalling a new audience.
  • A retailer greys out the "Add to cart" button without changing a word.
  • A banner announcing a partner integration disappears from the homepage.

Layout changes, removed banners and swapped images

Visual monitoring catches three kinds of change that text often misses.

Layout changes

Sections that move, grow, shrink or switch columns. A pricing grid that goes from four plans to three is easy to spot even before you read a single price.

Removed or added banners

Promotion bars, holiday sales strips, "New" labels and announcement banners appear and disappear all the time. When one vanishes for good, you see it in the highlight view and in your history.

Swapped images

A new product photo, a different hero image or a replaced partner logo row. Images rarely change the text of a page, so the screenshot is the only reliable record that they changed.

Visual and text diffs work as one

Every change record shows the visual diff next to the text diff, so you can confirm in seconds whether a highlighted area is a real edit. The website change detection engine combines both layers with the HTML structure, and the ai website monitoring summary explains the result in plain words.

Alerts carry a screenshot thumbnail of the changed area, so a Slack or Teams post already shows the picture. You choose who receives which changes on the website change alert settings, and every screenshot stays searchable in your website archive tools.

What teams watch visually

Ecommerce teams watch competitor product pages for price badges, stock labels and promotion banners.

Brand teams watch reseller pages to see how product images and logos are shown.

Product marketing watches competitor homepages for new hero messages, new screenshots of the product and reordered navigation.

Agencies watch client sites after each release to confirm that nothing in the layout broke and no banner was left behind.

Legal teams keep the screenshot as proof of how a cookie notice or a pricing disclosure looked on a given date.

Page change monitor questions

The full page, from header to footer, on every check. If you watch one element, the full page is still stored and the element is framed.

No. Tiny shifts from late-loading fonts, counters and similar noise are filtered out, and you can exclude noisy regions with an ignore region.

For as long as your plan keeps history: 6 months on Starter, 2 years on Growth, 5 years on Business and unlimited on Enterprise.

Yes. Each alert includes a screenshot thumbnail of the changed area and a link to the full visual diff.

Take your first snapshot

Paste a public URL and see the full-page screenshot and a summary of a real change. No card needed for the demo.