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Annotation

Annotations allow users to mark up and comment on PDFs without altering the original authors content.

PDFTron SDK Benefits include:

  • Infinite Undo/Redo
  • Support for annotation flattening
  • Support for annotation appearances
  • XFDF Import
  • Export annotations to FDF, XFDF, text, or PDF annotation summary
  • Sticky (Note)
  • Comments
  • Text markup (highlight, squiggly, underline, strikeout)
  • Add shapes (line, arrow, polyline, rectangle, ellipse, polygon, cloud)
  • Cloud annotations
  • Apply freehand ink annotations
  • Signatures
  • Save the annotations into the PDF file
  • File attachments
  • Sound, movie, and 3D annotations
  • Support for custom annotations
  • FreeText, Callout
  • TextHighlight, TextUnderline, TextSquiggly, TextStrikeout
  • Stamp
  • Redaction

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Annotation tools
An introduction to annotation tools and ToolManager.

Config annotation tools
To configure annotation tools using ToolManagerBuilder.

Import/export annotations
To import and export a full set of annotations in a document using XFDF.

Annotation sync
To import and export a partial set of annotations in a document using XFDF.

Annotation list
To display a list of all annotations in a document.

Annotation toolbar
To display a toolbar to create annotations and easily switch between different annotation tools.

Style editor
To display a style editor where users can change annotation colors.

Custom style editor
To customize style editor dialog changing standard colors and presets.

Style properties
To configure an annotations style properties such as border color, border thickness, fill color, and more.

Default style properties
To configure default annotation style properties such as border color, border thickness, fill color, and more.

Custom appearances
To customize an annotations appearance such as with a custom image.

Events/triggers
An introduction to events and triggers available from the ToolManager.

Custom event handlers
To customize event handling behaviour before executing or notified of actions as it happens.

Read only mode
To disable all interactions by enabling read only mode.

Disable create/edit
To selectively disable creation or editing of annotations.

Show/hide annotations
To show or hide annotations altering the annotations visibility.

Undo/redo annotations
To undo or redo annotation modification events.

Create annotations
To create a variety of annotations including stick note (text annotations), link annotations, and more.

Delete annotations
To selectively delete annotations on a page or the whole document.

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