Schema Forge

Page alerts

Get an alert when a page’s schema changes

Watch up to five pages and get a browser notification when their structured data is added, removed, broken or fixed. No account or email needed.

Checking what this browser supports…

How alerts work

  1. Turn it on

    Choose a page. Your browser gives the site a private notification address.

  2. We re-check daily

    The first check sets the starting point and never alerts. After that, only a change in structured data does.

  3. You get a notification

    It opens the generator for that page so you can see what changed.

What counts as a change

Sends an alert

  • A schema type is added or removed
  • New errors appear in the markup, or errors are fixed
  • The page cannot be read twice in a row, and when it comes back

Stays quiet

  • Ordinary text and design changes
  • The first check of a new watch
  • A single failed read

See the privacy page for exactly what is kept.

Questions

What triggers an alert?

A change in the structured data on a page you are watching: a schema type added or removed, new errors in the markup, errors fixed, or the page becoming unreadable or readable again. Ordinary content changes do not trigger one.

How often are pages checked?

About once a day. Each device can watch up to five pages, and a watch ends after 90 days, so turn it on again if you still want it.

Which browsers support alerts?

Chrome, Edge, Firefox and Safari 16.4 or later. On iPhone and iPad, add this site to your Home Screen first (Share, then Add to Home Screen) and open it from there, because Safari only allows alerts for installed web apps.

Can I see what changed?

Yes. Each watched page on this page has a What changed list with the last ten changes and when they were found, such as “Schema removed: Product” or “2 new schema errors”.

How do I stop alerts?

Open this page, remove a page from the list, or choose Turn off all alerts. You can also block notifications for the site in your browser settings.

Why did I not get an alert?

Check that notifications are allowed for this site, that the page really changed its structured data, and that the watch is still in the list. If your browser refreshed its notification address, turn the alert on again.