Turn event details into a promo image
When someone posts the event details, create a graphic that makes the essentials easy to find.
Trigger
Channel Message Received
Triggered when a message is posted in a Slack channel (public, private, or multi-party IM). Does NOT match direct messages.
Action
Convert HTML to Image
Tool to convert HTML content into an image. Returns either a downloadable file or a JSON payload containing id and url, depending on the upstream API behavior.
Why this helps
Event information is hard to share when the date and signup details sit inside a long Slack message.
- Bring date and registration details together.
- Make event information easier to reshare.
- Avoid rebuilding a one-off promo from scratch.
Setup
Build it in a few focused steps.
- 1Connect Slack and Html to image to Notis once in the portal.
- 2Create the automation through the portal or by asking Notis conversationally.
- 3Give one plain-language instruction to create an event promo image from Slack announcements.
- 4Select Channel Message Received and choose the run-report channel.
- 5Test with an event announcement that contains real details.
Questions about this workflow
What details should the message contain?
Include the event name, date, time, location or format, and signup link if available.
Can it make multiple sizes?
The action converts HTML into an image. Ask for a single clear layout suited to your intended use.
When this happens · Trigger
Do this · Action
Supported Triggers and Actions
Notis builds workflows that link Slack to Html to image. A trigger fires from one place; an action lands in another.
Slack triggers
Html to image actions
Recurring trigger
Notis starts this workflow on a schedule, such as daily, weekly, or during business hours.
Get HTML to Image
Tool to retrieve a generated image by its ID. Use when you need to fetch, resize, or download an existing HTML to image asset.
Webhook trigger
Notis starts this workflow when an external tool or custom backend sends an HTTP request.
Check HTML-to-Image Account Usage
Tool to retrieve account usage statistics including hourly, daily, and monthly image creation counts. Use after authenticating to review current usage limits and billing periods.
New Channel Created Trigger
Triggered when a new channel is created in Slack.
Convert HTML to Image
Tool to convert HTML content into an image. Returns either a downloadable file or a JSON payload containing id and url, depending on the upstream API behavior.
Channel Message Received
Triggered when a message is posted in a Slack channel (public, private, or multi-party IM). Does NOT match direct messages.
Direct Message Received
Triggered when a new direct message (DM) is sent to a user in Slack. Catches all DMs across all DM channels.
Message Reaction Added
Triggered when a reaction is added to a message in Slack. Supports optional filtering by channel and emoji name.
Message Reaction Removed
Triggered when a reaction is removed from a message in Slack. Supports optional filtering by channel and emoji name.
Reaction Added Trigger
DEPRECATED: use `SLACK_MESSAGE_REACTION_ADDED` instead. Triggered when a reaction is added to a message in Slack.
Connect any two apps with Notis in the middle.
Slack and Html to image, 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 Html to image.