Works with your current stack
Collaborative PDF power for your apps in a line of code

Collaboration
Multiplayer out of the box
Allow your users real-time collaboration on your app's PDF documents. They can annotate, comment, and see who is in the document and exactly what they are looking at in real-time.
Speed
Edge-Native Sync
Coordination points at the edge physically closest to your users. Sub-50ms latency for a snappy, desktop-like experience regardless of location, with real-time cursors, comments and annotations.
Document Privacy
Zero Document Storage
Your documents never leave your infrastructure — they stay in your bucket, and we only sync the "ink" (coordinates, cursors, comments and annotations). Privacy by design.
import { sync } from "@pdfslick/sync";
const viewer = sync({
container,
apiKey,
user: {
id: '2e8c6b9c-44d9',
name: 'John Smith',
},
doc: {
id: '3a30beaf-1ba3',
url: '/proposal_v1.pdf'
}
});SLICK DX
Integrate in Minutes, not Months.
Get up and running in 30 minutes or less.
Or we're not doing
it right!
Don't just take our word for it
Jump through the demos and see how it feels in your hands. Created with our SDK and attached to the DOM below, showcasing exactly how things would work within your app.