Optimize blog header images from Slack
Connect editorial planning to image preparation when a public header image link is shared.
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
Optimize Image by URL
Tool to optimize an image from a public url. use when you need to compress, resize, or convert an externally hosted image. returns result immediately if 'wait' is true.
Why this helps
Editorial tasks often cross writing, review, and publishing, leaving image preparation as a loose end.
- Prepare blog imagery alongside editorial coordination.
- Reduce the chance that a selected header image remains unoptimized.
- Keep image results close to the content discussion.
Setup
Build it in a few focused steps.
- 1Connect Slack and Kraken.io to Notis once through the portal.
- 2Create an automation in the portal or ask Notis conversationally.
- 3Give Notis one instruction to optimize public blog header image URLs shared in the editorial channel and return the result.
- 4Select the Slack channel message trigger and a channel for run reports.
- 5Test with one public blog header image URL.
Questions about this workflow
Does this publish the blog post?
No. It optimizes the image and returns the result; editorial publishing is separate.
Can it process other editorial images?
Describe the relevant image types and channel context in the prompt.
When this happens · Trigger
Do this · Action
Supported Triggers and Actions
Notis builds workflows that link Slack to Kraken io. A trigger fires from one place; an action lands in another.
Slack triggers
Kraken io actions
Recurring trigger
Notis starts this workflow on a schedule, such as daily, weekly, or during business hours.
Check Kraken.io User Status
Tool to retrieve current kraken.io account status and quota usage. use when you need to verify plan limits and remaining quota before processing images.
Webhook trigger
Notis starts this workflow when an external tool or custom backend sends an HTTP request.
Optimize Image by URL
Tool to optimize an image from a public url. use when you need to compress, resize, or convert an externally hosted image. returns result immediately if 'wait' is true.
New Channel Created Trigger
Triggered when a new channel is created in Slack.
Preserve Image Metadata
Tool to preserve exif and other metadata during kraken.io image optimization. use when you need to maintain metadata while compressing images.
Channel Message Received
Triggered when a message is posted in a Slack channel (public, private, or multi-party IM). Does NOT match direct messages.
Sandbox Image Upload
Tool to upload and optimize images in sandbox mode. use when you want to test the kraken.io api without consuming credits.
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 Kraken io, or any other combination from 1,000+ integrations.
When this happens · Trigger
Do this · Action
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