Toolbox Add On Updates & Release Notes

12 August 2026

Fixed​

• Before this update, Toolbox add-on could calculate the color complexity of images that use indexed color spaces incorrectly, due to an index overflow and unchecked lookup-table access at the table boundaries. As a consequence, affected indexed images could render incorrectly. With this release, index handling prevents the overflow and lookup-table access is bounds-checked. As a result, indexed images render reliably.
• Before this update, Toolbox add-on for Java could fail to extract its native libraries when the Toolbox add-on JAR file was repackaged into another JAR. As a consequence, the runtime failed to start or load in some environments. With this release, native library extraction handles repackaged JARs correctly, and the extraction flow produces more detailed diagnostic information. As a result, runtime initialization is reliable for repackaged JARs, and loading issues are easier to investigate with Pdftools support.

24 July 2026

Fixed​

• Before this update, the Toolbox add-on for Java extracted its native libraries to the temporary directory, where they accumulated over time. As a consequence, disk usage in the temporary directory grew with repeated use. With this release, the Toolbox add-on stores the extracted native libraries in a persistent per-user cache; if the cache location is unusable, the SDK falls back to extracting into the temporary directory. As a result, the libraries no longer accumulate, and initialization is faster after the first run.
• Before this update, the Toolbox add-on ignored color key masks (transparency) when rendering indexed images with fewer than 8 bits per component. As a consequence, masked pixels rendered opaque instead of transparent. With this release, the Toolbox add-on applies color key masks to these images, and masked pixels render transparent as expected.

9 July 2026

Added​

• Read the in-page scroll position of fit-height and fit-width bookmark destinations. The FitHeightDestination type exposes a Left property (the page location shown at the left border of the viewport), and the FitWidthDestination type exposes a Top property (the page location shown at the top of the viewport). Each returns null when the position before the jump is retained.

Changed​

• As of this release, Toolbox add-on no longer supports a glibc 2.12 build. The minimum supported glibc version is 2.17. Earlier releases of Toolbox add-on keep their glibc 2.12 build. If you need glibc 2.12 support in a newer releases of Toolbox add-on, contact Pdftools through the Contact page.

Fixed​

• Before this update, inspecting the font of an extracted text fragment through TextFragment.Font.BaseFont could crash the host application when the source PDF contained malformed font data, such as a missing FontDescriptor. As a consequence, applications that enumerated text fragments could terminate unexpectedly. With this release, the failure is reported as a regular SDK error, so applications can handle it gracefully. …