See what changed in an event
Get a readable record of the specific calendar fields that changed.
Trigger
Event Updated
Triggers when an existing Google Calendar event is modified. Returns the event ID, change type, and the specific fields that changed with their previous and new values.
Action
Convert HTML to PDF
Tool to convert HTML to a PDF document. Use when you need to generate a PDF from raw HTML. Returns raw PDF bytes suitable for download or storage.
Why this helps
When an event changes, it can take effort to work out what is different and what needs attention.
- Show the change type reported by the trigger.
- Compare previous and new values for changed fields.
- Keep a quick PDF record for follow-up.
Setup
Build it in a few focused steps.
- 1Connect Google Calendar and CustomJS once in the Notis portal.
- 2Create an automation in Automations, New Automation, or through a plain-language request to Notis.
- 3Ask Notis to format the event ID, change type, and changed fields with previous and new values as an HTML report and convert it to PDF.
- 4Choose Event Updated as the trigger and pick a report channel.
- 5Test with one real event edit and inspect the report.
Questions about this workflow
Does this trigger provide the full event?
It returns the event ID, change type, and the specific fields changed with their previous and new values.
Can it infer why the event changed?
The trigger does not provide a reason. Supply one yourself if you want it included.
When this happens · Trigger
Do this · Action
Supported Triggers and Actions
Notis builds workflows that link Google Calendar to Customjs. A trigger fires from one place; an action lands in another.
Google Calendar triggers
Customjs actions
Recurring trigger
Notis starts this workflow on a schedule, such as daily, weekly, or during business hours.
Authenticate CustomJS API Key
Tool to authenticate a CustomJS API key. Use when verifying a user's API key before making further requests.
Webhook trigger
Notis starts this workflow when an external tool or custom backend sends an HTTP request.
Convert HTML to PDF
Tool to convert HTML to a PDF document. Use when you need to generate a PDF from raw HTML. Returns raw PDF bytes suitable for download or storage.
Attendee Response Changed
Polling trigger that fires when any attendee's RSVP changes to accepted, declined, or tentative. Returns attendee info and current status.
Convert HTML to PNG
Tool to convert HTML string to PNG image. Use when you need a PNG from HTML after preparing your markup.
Event Canceled or Deleted
Triggers when a Google Calendar event is cancelled or deleted. Returns minimal data: event_id, summary (if available), and cancellation timestamp.
Capture webpage screenshot
Tool to capture a screenshot of a webpage. Use when you need a visual snapshot of a URL.
Event Starting Soon
Triggers when a calendar event is within a configured number of minutes from starting. Returns event details, time remaining, attendees, and join links when available.
Merge multiple PDFs into one
Tool to merge multiple PDF files into a single PDF. Use when you have multiple PDF URLs and want one combined PDF.
Calendar Event Changes
**SOON TO BE DEPRECATED** - Use Calendar Event Sync (polling trigger) instead. Real-time webhook trigger for calendar event changes. Returns event metadata only. For full event data, use Calendar Event Sync (polling trigger).
Run Puppeteer Script
Tool to run a Puppeteer script and capture a screenshot. Use when automating headless browser tasks and needing a PNG output. Use after confirming the script logic.
Event Created
Polling trigger that fires when a new calendar event is created. Returns event ID, summary, start/end times, and organizer info.
Calendar Event Sync
Polling trigger that returns full event data including details, attendees, and metadata. For real-time notifications with basic info, use Calendar Event Changes (webhook).
Connect any two apps with Notis in the middle.
Google Calendar and Customjs, or any other combination from 1,000+ integrations.
When this happens · Trigger
Do this · Action
Save your first hour today.
7-day trial of any paid plan, with 20$ of usage included.
No card. Works with personal or business Customjs.