Online Tool Store
Event Schema Builder
Event Schema Builder enforces the time zone offset, because a date without one is the error that puts an event on the wrong day.
🔒 This tool runs entirely in your browser. Your files are never uploaded to a server.
Tools
Structured Data Event Schema Builder
Frontend preview — no upload or external service.
Results
Using Structured Data Event Schema Builder to calculate and analyze your data.
How the Event Schema Builder works
- Enter the event details, using ISO 8601 dates with a time zone offset rather than a local time string.
- Set attendance mode and status explicitly. Both became important when online and cancelled events needed to be distinguishable.
- Include offers if tickets are sold, since price and availability are what make the result useful in search.
FAQ
Why does the date format matter so much?
Because a date without a time zone offset is ambiguous, and an event listed in the wrong time zone is worse than one not listed at all. ISO 8601 with an offset removes the ambiguity.
What is eventAttendanceMode for?
Distinguishing physical, online and hybrid events. It became a required distinction when online events became common, and omitting it means search engines guess from the location field.
Should a cancelled event be removed?
No — set eventStatus to cancelled and keep the markup. Removing the page leaves people with a stale search result and no way to learn it was cancelled.
How we compare
| Feature | Online Tool Store | An SEO suite | Hand-written markup |
|---|---|---|---|
| ISO date validation | ✓ | ✓ | ✗ |
| Attendance mode and status | ✓ | ✗ | ✓ |
| Nothing uploaded | ✓ | ✗ | ✗ |
| No sign-up | ✓ | ✓ | ✗ |
Event Schema Builder enforces the time zone offset, because a date without one is the error that puts an event on the wrong day.