Optimize review packet PDFs shared in Slack
Make a review packet easier to upload and circulate with one channel request.
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 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.
Why this helps
Large review packets create friction when collaborators work across slower connections or upload limits.
- Improves upload reliability
- Keeps review cycles moving
- Creates a shareable optimized copy
Setup
Build it in a few focused steps.
- 1Connect Slackbot and Api2pdf once in the Notis portal.
- 2Create an automation with a clear name and prompt.
- 3Describe that a review packet PDF reference in a channel message should be optimized for size.
- 4Pick Channel Message Received as the trigger.
- 5Choose a report channel and test with one review packet.
Questions about this workflow
Does optimization replace the original file?
The action creates an optimized result; keep the original reference if you need an unmodified copy.
When this happens · Trigger
Do this · Action
Supported Triggers and Actions
Notis builds workflows that link Slackbot to Api2pdf. A trigger fires from one place; an action lands in another.
Slackbot 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.
Slackbot and Api2pdf, or any other combination from 1,000+ integrations.
When this happens · Trigger
Do this · Action
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