Make shared PDFs easier to send
When someone flags a bulky PDF in a Slack channel, Notis can optimize it and return a lighter copy for the team.
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 attachments slow down handoffs and create another manual file cleanup task.
- Reduce file size when a teammate asks for it.
- Keep the request and optimized result in the same Slack conversation.
- Avoid opening a separate PDF utility for a one-off task.
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 what you want in plain language.
- 3Use one instruction: when a channel message asks to shrink a PDF and includes an accessible PDF, optimize it and reply with the result.
- 4Choose the Slack channel-message trigger and a channel for run reports.
- 5Test with a real Slack request and a PDF you can access.
Questions about this workflow
Will every PDF in the channel be optimized?
Describe in the instruction that Notis should act only when the message asks to reduce a PDF's size.
Where will the optimized file go?
Ask Notis to reply in the conversation with the result, and choose a separate channel for automation run reports.
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
Save your first hour today.
7-day trial of any paid plan, with 20$ of usage included.
No card. Works with personal or business Api2pdf.