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PDFTron is now Apryse, learn more here.

iOS / Changelog /


PDFTron is now Apryse, learn more here.

Version Changelog (October 28th, 2021)

  • Version:,
  • Release Date: October 28th, 2021
  • Built with Xcode 13.0 (13A233)


  • Ability to annotate in reflow
  • Form creation toolbar
  • Redaction toolbar
  • New Signature UI
  • Digital signature validation
  • Rich text support (ability to underline, bold and italicize words within a free text annotation)
  • Nested OCG Layer support
  • Improved performance when opening documents with a very large number of annotations
  • Adds ability to scroll with 1 finger when in sticky note, free text, sound and file attachment tool creation mode
  • Ability to export an file-size optimized copy of a PDF
  • New delegate methods/notifications for when an annotation is flattened
  • Annotation editing modes: the default .editAll mode allows any user/author to edit or delete any annotation, while using the .editOwn mode the current user/author is limited to editing or deleting only their own annotations
  • Device locale is used to determine if a "." or a "," should be used as the decimal separator in measurement annotations


  • Removes the scan text UIMenuItem from the standard long-press menu on iOS 15
  • UINavigationBar styling is functions as expected in all use cases on iOS 15
  • Rapidly pressing the undo/redo buttons will no longer crash
  • Export flattened copy is functional again.
  • Fixes an issue where a selected annotation would sometimes appear to disappear when the device was rotated.
  • Fixes an issue where the viewer could become unresponsive for a few seconds.
  • Fixes a memory leak in the viewer.
  • Dismissing an editable combo box by tapping on the edit row saves back text
  • Loupe will no longer occasionally get stuck on screen when using the line/ruler create tools.
  • Measurement calibrations apply to all calibrations
  • Fixes an issue where on occasion there would be a crash when returning from the background
  • New annotation default style/properties are now respected when updating from a previously installed copy of the app.
  • Fixes an issue with the annotation list control not updating correctly when opening subsequent documents
  • Fixes an issue where annotations would remain in the annotation list control after being deleted from the document
  • Fixes an issue when erasing ink annotations with empty stroke data.
  • Fixes an issue where measurement calibrations could not be applied in certain locales.

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