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PDFTron is now Apryse, learn more here.

iOS / Changelog /


PDFTron is now Apryse, learn more here.

Version 9.1.2 Changelog (December 13th, 2021)

  • Versions:,
  • Release Date: December 13th, 16th, 2021
  • Built with Xcode 13.1 (13A1030d)

New Features

  • Support for Annotation states (accepted, rejected, approved, not approved) in the annotation replies UI
  • Inserting new pages can now be done from the "Insert" toolbar
  • Support for drag-and-drop of images onto a PDF, which are added as stamps.
  • Imperial measurements are displayed in fractions of an inch rather than decimals.
  • Externally linked files with destination page numbers are now supported.
  • The arrow drawing direction has been reversed to conform with industry norms and Apryse's Android SDK.
  • New reflow UI options to control if scrolling is vertical or horizontal.

New APIs

  • Ability to exclude specific annotation types from being removed by the PTEraser tool.
  • The PTSmartPen tool can now be enabled and disabled with the new PTToolManager instance property isSmartPenEnabled.
  • Whether to store the newly created signature or persist the setting can now be set in PTSignatureAnnotationOptions.
  • A new document-opening API was added to the PTDocumentController and PTTabbedDocumentViewController classes
    • The optional PTDocumentOptions parameter can be used to specify the file type/extension for files do not have an extension, or for files that have an incorrect extension


  • Restored API to turn off all images in reflow.
  • Annotations created by subclasses of tools in the Prepare Form toolbar can now be edited if the tool is active.
  • Fixed a rare crash that could occur when opening documents with a very large number of annotations.
  • Able to show signature list on the legacy PTAnnotationToolbar.
  • Improved performance of tabbed-viewer tab persistence.
  • Fixes an issue with closing tabbed-viewer tabs from the tab overview control.
  • Fixed issue where annotation replies could not be deleted in certain circumstances.

New APIs

  • Events are posted before and after text is copied from a document. Before the text is copied, it is possible to change the text (limit the number of characters, remove sensitive information, etc.).


  • Fixes an issue caused by a missing default (imperial) fraction precision for measurement annotations
  • Sets the default color of sticky note annotations to yellow instead of black
  • The eraser tool now erases freehand highlight marker annotations point-by-point, the same as freehand ink annotations

Get the answers you need: Support