Release Highlights

Aspose.PDF for .NET 24.11 (MSI) brings intelligent page number updates, RGB↔CMYK conversion using ICC profiles, flexible hashing algorithms for signatures, and enhanced support for font, redaction, and accessibility features.

✳️ New Feature

• Auto Pagination: Page numbers in headers/footers now update automatically when inserting pages.
• RGB/CMYK Conversion: Convert between RGB and CMYK using custom ICC profiles.
• Custom Hash Algorithm for Signatures: Specify hashing algorithms like SHA256 when signing documents.

🔧 Enhancement

• SHA256 Support: Enables use of the SHA256 algorithm for standard and external digital signatures.
• 192-bit ECDSA Support: Added compatibility for 192-bit private keys in PKCS7Detached signatures.
• HTML Export Precision: Improved CMap subtable parsing to correct Unicode errors.
• Lossless Image Compression: Enable compression without quality loss for 2 BPP and 4 BPP image formats.

🛠 Fix

• Addressed PDF/A and encryption issues:
  • Fixed compliance errors in PDF/A-1b and PDF/A-3b output
  • Corrected behavior when opening 256-bit AES encrypted PDFs
• Resolved validation bugs:
  • Signature validation, timestamp parsing, external signature compatibility
• Conversion improvements:
  • HTML-to-PDF rendering stability
  • Image-to-PDF layout consistency and garbled character fixes (e.g., Japanese)
• General reliability fixes:
  • NullReferenceExceptions, concurrency issues, form field layout shifts, incorrect redaction behavior

🔁 Public API & Backwards Incompatible Changes

• Pagination API Suite Added:
  • Aspose.Pdf.Artifacts.Pagination namespace for header/footer auto-updates
  • Includes PageNumber, PageDate, HeaderFooterSettings, and alignment controls
• Signature & Security Enhancements:
  • DigestHashAlgorithm.Sha384, CryptographicStandard, and new constructors for ExternalSignature, PKCS7Detached
  • New SignatureAlgorithmInfo, KeyedSignatureAlgorithmInfo, EcdsaAlgorithmInfo, TimestampAlgorithmInfo
• Optimization Enhancements:
  • OptimizationOptions.LinkDuplicateStreams for stream deduplication
• Updated Image Insertion:
  • New overload: Page.AddImage(Stream, Rectangle, Rectangle, bool)
• Removed API:
  • CurveTo.Points property

👉 You can view the full list of updates by visiting Aspose.PDF for .NET 24.11 Release Notes

auto update page numbers | rgb to cmyk icc | sha256 signature pdf | aspose pdf lossless compression | pagination headerfooter api