What’s new in the Aspose.PDF for Java 25.1

Release Highlights

Aspose.PDF for Java 25.1 brings key advancements in digital signing, font substitution, and compliance customization. This release addresses slowdowns in annotation processing, enhances SHA256/SHA512 signing, and introduces powerful APIs for privilege management and PDF/X-1a ICC profiling. Numerous bug fixes also target HTML rendering, image conversion, and PDF/A attachment integrity.

New Features

• RSA Provider Compatibility Enhancement:
  Support for environments where NONEwithRSA is not universally available across Java providers, ensuring broader compatibility.

• Document Privileges Inspection:
  New functionality to retrieve detailed document privilege settings (e.g., printing, copying), aiding security audits and compliance checks.

• Font Substitution When Installed:
  Now detects and uses suitable installed fonts even when embedded fonts are missing, improving rendering consistency without manual intervention.

• Output Intent Customization for PDF/X-1a:
  Introduced support for setting custom ICC profiles when converting to PDF/X-1a, helping meet specific print and archival standards.

Enhancements

• Annotation Flatten Performance Optimization:
  Resolved significant slowdowns in Annotation.flatten() noted since version 24.09, restoring expected performance for large files.

• General Processing Speed Improvements:
  Addressed multiple cases of performance degradation during file manipulation.

• SHA256 and SHA512 Signing:
  Strengthened document security by allowing use of SHA256 or SHA512 hashes in digital signatures, aligning with modern cryptographic best practices.

Bug Fixes

• Digital Signature Fixes:

  • Addressed signature verification failures under specific configurations.
  • Fixed issues where setting privileges before signing caused signature invalidation.

• HTML to PDF Rendering Issues:

  • Corrected multiple layout problems including word wrap, word break, and table-cell alignment.
  • Resolved content loss and formatting errors in HTML fragments and MHT conversions.
  • Fixed exceptions thrown during HTML processing.

• Underline and Text Style Extraction:

  • Improved recognition and extraction of underline, strikethrough, subscript, and superscript formatting.

• PDF/A Compliance Fixes:

  • Ensured attachments retain PDF/A conformance.
  • Fixed compliance issues in converted files.

• Other Resolved Issues:

  • PNG output now correctly renders images.
  • EPS image insertion now works without null pointer exceptions.
  • Resolved issues with NullPointerException on saving PDFs and during concatenation processes.

Public API and Backwards Incompatible Changes

Added Methods:

• ExternalSignature(X509Certificate, PrivateKey, DigestHashAlgorithm)
• PdfFileSignature.verifySignature(String, ValidationOptions, ValidationResult[])
• FloatingBox.getPositioningMode()
• FloatingBox.setPositioningMode(ParagraphPositioningMode)
• OcspSettings.getRequestTimeout() / .setRequestTimeout(int)
• Signature.getCustomSign() / .setCustomSign(CustomSign)
• Signature.verify(ValidationOptions, ValidationResult[])

Added Classes:

• com.aspose.pdf.CustomSign
• com.aspose.pdf.ParagraphPositioningMode

Added Fields:

• HtmlSaveOptions.RasterImagesSavingModes.DontSave
• TeXLoadResult.InvalidResult

Method Changes:

• Removed the boolean parameter from:
  • Field.flatten(boolean) → Field.flatten()
  • RedactionAnnotation.flatten(boolean) → RedactionAnnotation.flatten()

🔍 Explore the Full Release Details

For full list of updates, please visit Aspose.PDF for Java 25.1 Release Notes.

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