Some test text!

Document SDK

separator icon

Annotation SDK

PDF Markup Tool With 35+ Out of the Box Annotations to Enrich Your Document Applications

Provide your users with powerful, cross-platform annotations and markup tools - available for PDFs, Office documents, images, and dozens of other file formats.

Add Annotations to Your Application

Talk to a Solution Engineer to help get your project off the ground.

Annotate, Highlight, Markup

Provide your users with dozens of powerful annotation and markup tools, such as sticky notes, comments, bookmarks, freehand drawings, file attachments, and more. Export notes and annotations from an XFDF layer.

annotate image

E-Signatures & Digital Signatures

Sign your documents with confidence using e-signatures, or explore options for secure and validatable Digital Signatures.

signatures image

Flatten Annotations

Merge annotations with your document by flattening, cementing your markups for future reference.

flatten image

Annotation Permissions

Set levels of permissions for your users to control who’s a reader and who’s a contributor in your document.

Permissions image

Rich Text Annotations

Emphasize your text with a wide range of text annotations, including bold, italic, underline, strikeout, or assign different text colors.

Rich text image

Form Filling

Create and automate form field capabilities across web, mobile, desktop, and server applications.

Form filling image

Real-Time Collaboration

Engage your users with real-time collaboration. Changes appear as they occur without reloading the document.

Collaboration image

How Customers Benefit From Our Annotation Library

Drawboard icon
Quotes icon

PDFTron demonstrated superior speed and functionality out-of-the-box. In contrast, the competition took a lot of shortcuts, and it was obvious in the user experience. If we were to swap another SDK in for our current one, I would expect customers would definitely notice a difference, which in turn could affect our customer retention.

Alistair Michener, Founder and CEO, Drawboard

Read more about


Related Pages

Upcoming Webinar: PDFTron SDK Tech Review | Nov 29, 2022 at 2 pm ET


The Platform


© 2022 PDFTron Systems Inc. All rights reserved.


Terms of Use