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Datalogics Adobe PDF Library Service Bulletin 2026-JUL-APDFL21-1

Jul 29, 2026 at 3:17 PM

Datalogics Adobe PDF Library Service Bulletin 2026-JUL-APDFL21-1

For Windows, WindowsARM, Linux, Linux ARMv8, Mac, Mac ARMv8, and AIX 
Wednesday, July 22, 2026

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Datalogics APDFL v21.0.0PlusP1c - Now available for download!

Datalogics is pleased to announce the release of APDFL v21.0.0Plus1c. This release includes version 21-based .NET, .NET Framework, and Java interfaces. The following sections outline the key "new features," "changes," "open source updates," and "problem corrections."

This version contains the following new features:
•    Added support for OCR with Vietnamese text.
     Optical Character Recognition (OCR) now supports recognition of Vietnamese-language text, including Vietnamese-specific characters and diacritical marks. This enhancement improves text extraction
     accuracy and searchability for scanned documents containing Vietnamese content.

This version contains the following changes:
•    Forms Extension installers now support the Modern C++ interface.
•    The XPS2PDF plugin now reports a specific error when the joboptions file cannot be found.
•    Corrected installer documentation that still referenced APDFL 18.
•    With this release, the Maven package version has been increased to 21.0.1.
•    With this release, the NuGet package version has been increased to 21.0.1.

This version contains the following open source updates:
•    Boost 1.91.0
•    cURL 8.21.0
•    Expat 2.8.2 (addresses CVE-2026-45186)
•    libTIFF 4.7.2
•    OpenSSL 3.6.3

This version contains the following problem corrections:
•    SF45180 – Improves flattening of XFA documents where a Button field has no Caption but a Text Label overlaid on top of it.
•    SF47401 - Corrects an issue where content could be clipped unexpectedly when flattening an XFA document with Forms Extension.
•    SF47460 – Corrects an issue where some XFA documents, when flattened AsIfPrinted, showed content that was meant to be excluded.
•    SF47461 – Corrects an issue where a heavily crowded Text Field shared across pages of an XFA document could be slightly clipped when flattened with Forms Extension.
•    SF47486 – Improves flattening of XFA documents where a Button field has no Caption but a Text Label overlaid on top of it.
•    SF47555 – Corrects a problem where System Font selection could choose a similarly named but different style variant in some cases.
•    SF47562 – Corrects an issue preserving the grouping symbol in a decimal value for a numericEdit field when flattening an XFA document.
•    SF47581 – Corrects a problem where rendering a document with minor Page Content errors raised an error when it previously did not.
•    SF47585 – Corrects a small memory leak that could occur when subsetting fonts.
•    SF47591 – Corrects an issue where a PDF’s Producer property still reported APDFL v18; it now correctly reports v21.
•    SF47597 - This corrects a problem during Color Conversion where the inherited GraphicState would be changed unexpectedly in some cases.
•    SF47599 – Corrects an issue where rendering to a CMYK-based space would not preserve K-only content as pure black.
•    SF47603 - This corrects an issue with the Color Conversion option mPromoteGrayToCMYK when enabled, which would result in unexpected Gray values.
•    SF47610 - This corrects a problem where Color Converting a Page could unexpectedly affect a shared Form on another page.

How to upgrade to the NEW version
  1. Connect: sftp://ftp.datalogics.com using an FTP client (port 22) or CLICK HERE to log in using your browser
  2. Use your private username/password that was provided during your evaluation/purchase
    1. Username: <<your user account number>>
    2. Password: <<your user password>>
  3. Issue a change directory to /Products/apdfl/[platform]/APDFLv21.0.0Plus/ or to /Products/apdfl/[platform]/APDFLv21_ModernCPlusPlusSDK/

A note about service bulletins 

You are receiving this email as a customer of the Datalogics Adobe PDF Library product, and because we want you to be informed as we evolve our solution to meet your needs. This is not a marketing or promotional communication. If you have questions regarding Service Bulletins, email preferences, or need to update your contact information, please contact us at tech_support@datalogics.com.