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Version: Version 1.0.2

Pdftools OCR Service release notes

Learn about new updates in the OCR Service, including new features, improvements, and bug fixes.

Version 1.0.2​

10 November 2025

Fixed​

  • Fixed SDK corruption issues with ABBYY FineReader Engine that could cause the Pdftools OCR Service to become unstable or crash during processing. As of this update, the service automatically detects corruption and recreates the OCR engine when needed.
  • Fixed failures when processing large files by increasing the default maximum request body size from 30 MB to 100 MB. As a result, processing of large TIFF files and multi-page documents no longer fails due to file size limitations.
  • Improved error handling and logging for failed OCR jobs, with better exception tracking and proper error code reporting.

Changed​

  • The maximum request body size is now configurable using the MaxRequestBodySizeBytes setting in the manager node appsettings.json file, allowing administrators to adjust the limit based on their specific requirements. The configured default is 100 MB (specifically, it is defined as 104857600 bytes).

Version 1.0.1​

15 September 2025

Fixed​

  • Fixed PostgreSQL database migration compatibility issues to ensure correct schema updates when upgrading from previous versions.
  • Improved OCR validation and file creation processes to enhance reliability and error handling during document processing.

Version 1.0.0​

30 July 2025

Added​

  • First release of the Pdftools OCR Service introduces a new OCR engine that is fully compatible with current 3-Heights® OCR Service workflows and configurations. It acts as a drop-in replacement for existing installations, requiring no changes to your integration or processing pipelines. Compared to the previous OCR configurations (the ABBYY FineReader using your license key and the legacy 3-Heights® OCR Service), the new Pdftools OCR Service also provides:
    • Streamlined installation and license key configuration.
    • Scalability options to support higher throughput.

Changed​

  • Compared to the 3-Heights® OCR Service, this release of the Pdftools OCR Service doesn’t include support for the BusinessCardsProcessing predefined OCR profile.