Retrieve an existing visual from Slack
Post a generated asset ID in a Slack channel and have Notis retrieve the corresponding image for the run report.
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
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.
Why this helps
A generated asset is difficult to reuse when its ID is buried in a message and nobody fetches the file.
- Fetch an existing image using its shared ID.
- Make the retrieved asset easier for the team to access.
- Avoid recreating a visual that already exists.
Setup
Build it in a few focused steps.
- 1Connect Slack and Html to image to Notis once in the portal.
- 2Create an automation in the portal or ask Notis using plain language.
- 3Give one instruction to retrieve the existing Html to image asset when a Slack message includes its ID.
- 4Select Channel Message Received and choose where run reports should appear.
- 5Test with one real asset ID and verify the retrieved image.
Questions about this workflow
Does this create a new image?
No. It retrieves an existing generated image by its ID.
What should the Slack message contain?
Include the asset ID and ask for that image to be fetched.
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
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No card. Works with personal or business Html to image.