What’s new in the Aspose.PDF for Java 25.2

Release Highlights

Aspose.PDF for Java 25.2 introduces key upgrades including ECDSA and DSA signature support, export to PDF/X-4 format, and precise font metrics calculations. Enhancements to signature management, HTML rendering, and EPUB support solidify this release as a significant step forward in digital document creation and processing.

New Features

• Get Ascent and Descent of Text by Font and Size:
  New API methods allow developers to retrieve ascent and descent values, helping with advanced layout calculations and typography precision.

• ECDSA and DSA Signature Support:
  Now supports signing PDFs using ECDSA and DSA certificates, offering broader cryptographic flexibility.

• Center-Aligned HTML Output and Full-Width Paragraphs:
  Enhancements to HTML to PDF conversion now support center alignment and full-width flow layout rendering.

• PDF to PDF/X-4 Conversion:
  Added the ability to export PDFs to PDF/X-4, meeting modern print and prepress standards.

Enhancements

• Improved Empty Page Handling:
  Enhancements to blank page detection increase the accuracy of content assessments.

• Verify Digital Signatures with Duplicate Names:
  Now supports validation of multiple digital signatures sharing the same name within a document.

• Multi-Widget TextBoxField Support:
  Developers can now create TextBoxField instances containing several widget annotations.

• ExtGState Dictionary Editing:
  Offers ability to modify extended graphics state dictionaries in page resources for advanced rendering customization.

Bug Fixes

• Rendering and Formatting Fixes:

  • Resolved EPUB rendering regression affecting certain languages.
  • Fixed text truncation issue when modifying TextFragment.

• Conversion and Save Issues:

  • Fixed NullPointerException during PDF/A conversion and saving.
  • Addressed issues when resizing pages that led to structural problems.

• HTML-Related Fixes:

  • Corrected hangs when processing base64 images in HTML to PDF.
  • Fixed SVG rendering issues and missing bookmarks in concatenated PDFs.
  • Improved hyperlink preservation in DOCX outputs and fixed formatting breaks.

• Other Critical Fixes:

  • PDF to DOCX conversion now works correctly on Ubuntu.
  • Resolved validation issues with PDF/A output.
  • Fixed exceptions related to HTML loading and Headless CI environments.
  • Resolved signature length mismatches and rendering of base64 images in HTML fragments.

Public API and Backwards Incompatible Changes

Added Classes:

• CosPdfDictionary
• ConvertException
• SignatureLengthMismatchException
• SignatureName

Added Methods:

• Digital signature inspection and validation methods in PdfFileSignature, including:
  • getSignatureNames()
  • coversWholeDocument(SignatureName)
  • verifySignature(SignatureName)
  • extractImage(SignatureName) and extractCertificate(SignatureName)
• Typography methods:
  • Font.getAscentPoint(String, float)
  • Font.getDescentPoint(String, float)
• HTML and image enhancements:
  • HtmlSaveOptions.getFlowLayoutParagraphFullWidth()
  • ImageStamp.getXIndent() / getYIndent() and corresponding setters
• Additional PDF signing enhancements:
  • Signature.getDefaultSignatureLength() / .setDefaultSignatureLength(int)
  • Signature.isAvoidEstimatingSignatureLength()

Added Constructors:

• TextBoxField(Page, Rectangle[])
• DictionaryEditor(Resources)

Deprecated Methods and Constructors:

• Multiple signature-related methods in PdfFileSignature (using String) are deprecated in favor of SignatureName-based methods.
• Deprecated: CheckboxField.#ctor()

🔍 Explore the Full Release Details

For full list of updates, please visit Aspose.PDF for Java 25.2 Release Notes.

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