Make overlay text easier to read
Use a Slack note about overlay contrast to apply a defined text color and create a clearer image proof in Imgix.
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
Set Text Color
Tool to set text overlay color on an Imgix image. Use when customizing text overlays with CSS color keywords or hex codes.
Why this helps
Unclear overlay colors lead to avoidable review rounds and small fixes that are easy to drop.
- Turn legibility feedback into a concrete visual adjustment.
- Reduce repeated review for overlay readability.
- Keep color choices explicit in the image handoff.
Setup
Build it in a few focused steps.
- 1Connect Slack and Imgix to Notis once in the portal.
- 2Ask Notis to create an overlay-color automation or create one under Automations.
- 3Write one plain-language instruction describing the overlay feedback and desired text color.
- 4Select the Slack channel-message trigger, choose a run-report channel, and test with one real image proof.
Questions about this workflow
Can I request a specific color value?
Include a CSS color name or hex value in the instruction.
Can this be combined with an overlay caption?
Describe the short text and its color in the same prompt for the Imgix text overlay workflow.
When this happens · Trigger
Do this · Action
Supported Triggers and Actions
Notis builds workflows that link Slack to Imgix. A trigger fires from one place; an action lands in another.
Slack triggers
Imgix actions
Recurring trigger
Notis starts this workflow on a schedule, such as daily, weekly, or during business hours.
Imgix Auto Optimization
Tool to apply automatic best-effort image optimizations. Use when you need to compress, enhance, format, or remove redeye via Imgix's auto parameter.
Webhook trigger
Notis starts this workflow when an external tool or custom backend sends an HTTP request.
Blend Overlay
Tool to overlay an image, text, or color onto a base image using imgix blending parameters. Use after specifying the base image URL and blend parameters to composite layers.
New Channel Created Trigger
Triggered when a new channel is created in Slack.
Imgix Blend Align
Tool to align the overlay relative to the base image when blending. Use after constructing a base Imgix URL to specify horizontal and vertical alignment (e.g., 'left,top').
Channel Message Received
Triggered when a message is posted in a Slack channel (public, private, or multi-party IM). Does NOT match direct messages.
Blend Color Over Image
Tool to blend a solid color over an image using CSS keyword or hex. Use when you need to apply color overlay transformations to an existing image URL.
Direct Message Received
Triggered when a new direct message (DM) is sent to a user in Slack. Catches all DMs across all DM channels.
Imgix Blend X Position
Tool to position the overlay horizontally on an Imgix-rendered image. Use when you need to offset the blend layer by a specified number of pixels from the left edge.
Message Reaction Added
Triggered when a reaction is added to a message in Slack. Supports optional filtering by channel and emoji name.
Draw Image Border
Tool to draw a border around an image. Use when you need to overlay a border without resizing.
Message Reaction Removed
Triggered when a reaction is removed from a message in Slack. Supports optional filtering by channel and emoji name.
Adjust Image Brightness
Tool to adjust image brightness. Use when you need to modify an image's brightness level (−100 to 100) by supplying your source domain and asset path.
Reaction Added Trigger
DEPRECATED: use `SLACK_MESSAGE_REACTION_ADDED` instead. Triggered when a reaction is added to a message in Slack.
IMGIX_CH
Tool to opt in to Client Hints. Use when you want Imgix URLs to adapt based on browser headers (Width, DPR, Save-Data).
Connect any two apps with Notis in the middle.
Slack and Imgix, or any other combination from 1,000+ integrations.
When this happens · Trigger
Do this · Action
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