Make image references easier to find in Slack
Pass an image URL, unique external ID, and AltTextLab description to Notis, then add the reference to Slack.
Trigger
Webhook received
Notis starts this workflow when an external tool or custom backend sends an HTTP request.
Action
Add a remote file
Adds a reference to an external file (e.g., google drive, dropbox) to slack for discovery and sharing, requiring a unique `external id` and an `external url` accessible by slack.
Why this helps
Useful image references and their accessibility descriptions can be hard to find again after a campaign moves on.
- Keep an image reference discoverable in Slack
- Preserve the generated description with the submitted context
- Reduce repeated searching for campaign assets
Setup
Build it in a few focused steps.
- 1Connect AltTextLab and Slack once in the Notis portal.
- 2Create an automation in Automations, New Automation, and name it.
- 3Tell Notis to add each submitted image URL as a Slack remote file using its unique external ID and include the AltTextLab description as context where supported.
- 4Choose the webhook trigger and where run reports should go.
- 5Test with one real image URL that Slack can access.
Questions about this workflow
What does Slack need for a remote file?
The workflow needs a unique external ID and an external URL accessible by Slack.
Does adding a remote file upload the image?
No. It adds a reference to an external file for discovery and sharing.
When this happens · Trigger
Do this · Action
Supported Triggers and Actions
Notis builds workflows that link AltTextLab to Slack. A trigger fires from one place; an action lands in another.
AltTextLab triggers
Slack actions
Recurring trigger
Notis starts this workflow on a schedule, such as daily, weekly, or during business hours.
Set snooze duration
Deprecated: turns on do not disturb mode for the current user, or changes its duration. use `set dnd duration` instead.
Webhook trigger
Notis starts this workflow when an external tool or custom backend sends an HTTP request.
Add a custom emoji to a Slack team
Deprecated: adds a custom emoji to a slack workspace given a unique name and an image url. use `add emoji` instead.
Add an emoji alias
Adds an alias for an existing custom emoji in a slack enterprise grid organization.
Add a remote file
Adds a reference to an external file (e.g., google drive, dropbox) to slack for discovery and sharing, requiring a unique `external id` and an `external url` accessible by slack.
Add a star to an item
Stars a channel, file, file comment, or a specific message in slack.
Add call participants
Registers new participants added to a slack call.
Add emoji
Adds a custom emoji to a slack workspace given a unique name and an image url; subject to workspace emoji limits.
Add reaction to message
Adds a specified emoji reaction to an existing message in a slack channel, identified by its timestamp; does not remove or retrieve reactions.
Connect any two apps with Notis in the middle.
AltTextLab and Slack, or any other combination from 1,000+ integrations.
When this happens · Trigger
Do this · Action
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