Get a quick preview with one reaction
A reaction can signal that someone needs a glance at a document before opening or downloading it.
Trigger
Message Reaction Added
Triggered when a reaction is added to a message in Slack. Supports optional filtering by channel and emoji name.
Action
LibreOffice Thumbnail
Tool to generate a thumbnail image of a document using libreoffice. use when you need a quick visual preview of a pdf or office file's first page.
Why this helps
Reviewers often spend time opening files just to confirm what they contain.
- Make document previews easy to request.
- Give reviewers a quick first-page visual.
- Keep the preview tied to the original message.
Setup
Build it in a few focused steps.
- 1Connect Slack and Api2pdf to Notis once in the portal.
- 2Create an automation in the portal or tell Notis conversationally.
- 3Use one instruction to create a thumbnail for the accessible document in a message marked with the agreed reaction and return it in the conversation.
- 4Choose the Slack reaction-added trigger, optionally filter for the chosen emoji, and select a run-report channel.
- 5Test by reacting to a real message containing an accessible document.
Questions about this workflow
Which part of the document is previewed?
The action creates a thumbnail of the first page.
How do teammates signal a preview request?
Agree on an emoji and, if useful, select it in the trigger's optional emoji filter.
When this happens · Trigger
Do this · Action
Supported Triggers and Actions
Notis builds workflows that link Slack to Api2pdf. A trigger fires from one place; an action lands in another.
Slack triggers
Api2pdf actions
Recurring trigger
Notis starts this workflow on a schedule, such as daily, weekly, or during business hours.
Add Header Footer
Tool to add headers and footers to a pdf document. use when you need consistent page numbering, titles, or custom branding on every page.
Webhook trigger
Notis starts this workflow when an external tool or custom backend sends an HTTP request.
Delete PDF
Tool to delete a previously generated pdf. use when you need to immediately remove a pdf by its response id.
New Channel Created Trigger
Triggered when a new channel is created in Slack.
Extract PDF Pages
Tool to extract specific pages from a pdf document. use when you need only certain pages from a larger pdf file.
Channel Message Received
Triggered when a message is posted in a Slack channel (public, private, or multi-party IM). Does NOT match direct messages.
LibreOffice PDF to HTML
Tool to convert a pdf document to html using libreoffice. use when you need html output of a pdf file (experimental; images may be excluded).
Direct Message Received
Triggered when a new direct message (DM) is sent to a user in Slack. Catches all DMs across all DM channels.
LibreOffice Thumbnail
Tool to generate a thumbnail image of a document using libreoffice. use when you need a quick visual preview of a pdf or office file's first page.
Message Reaction Added
Triggered when a reaction is added to a message in Slack. Supports optional filtering by channel and emoji name.
Merge PDFs
Tool to merge multiple pdf documents into a single pdf. use when you need to concatenate several pdfs on the server-side.
Message Reaction Removed
Triggered when a reaction is removed from a message in Slack. Supports optional filtering by channel and emoji name.
Optimize PDF
Tool to optimize a pdf document to reduce file size while maintaining quality. use when you need to minimize storage or bandwidth for an existing pdf.
Reaction Added Trigger
DEPRECATED: use `SLACK_MESSAGE_REACTION_ADDED` instead. Triggered when a reaction is added to a message in Slack.
Reorder PDF Pages
Tool to reorder pages of a pdf document. use when you need to rearrange pages into a new order by specifying page indices.
Connect any two apps with Notis in the middle.
Slack and Api2pdf, 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 Api2pdf.