Year 2025 Docotic.Pdf notices

Post about a year releases

Updated on June 2, 2025

This page contains all Docotic.Pdf release notices for year 2025.

Visit the Docotic.Pdf page for more information and download links. The full Version History for 2025 releases is also available.

We would appreciate if you let us know about your experience with the library. Your questions and feature suggestions are also welcome. Write us an e-mail or contact us via the support form. We love to hear from our users.

Long-Term Validation (LTV) signatures in Docotic.Pdf 9.7

June 02, 2024

Docotic.Pdf 9.7 has arrived - find it on our site and NuGet.

The ability to embed long term validation (LTV) information for digital signatures is the key feature of this version.

LTV signatures are crucial for ensuring that a document's authenticity can be verified long after signing. Starting from version 9.7, the library can embed essential validation data - such as certificate revocation lists (CRLs) and Online Certificate Status Protocol (OCSP) responses - directly into the PDF. As a result, even if the original certificate authorities and validation sources become unavailable, the document remains verifiable.

Check the new code samples to know how to:

Produce LTV-enabled signatures compliant with ETSI specifications.
Add LTV information to existing signatures, producing Advanced Electronic Signatures (PAdeS B-LT level) or Qualified Electronic Signatures (PAdeS B-LTA level).
Certify PDFs with B-LT certification signatures.

The new version also contains these improvements:

Reduced memory consumption: The library saves documents in a new way that reduces the likelihood of objects getting into LOH. Also, internal structures use fewer bytes.
Enhanced font support: Resolved issues affecting text rendering with both new and existing fonts for improved visual consistency. Additionally, fixed bugs related to processing OTF fonts with invalid table directories, enhancing reliability in font handling.
Image handling fixes: Resolved issues with processing RGB JPEG images that use custom decode parameters. Improved CMYK JPEG 2000 image extraction, ensuring accurate retrieval. Addressed bugs affecting inline images processing and handling of images with invalid masks. Fixed decoding errors in PNG images and improved the processing of TIFF images, including enhanced support for transparent grayscale TIFFs.

There are breaking changes in this version of Docotic.Pdf:

GetFonts, GetImages, GetColorProfiles, and GetPatterns methods in PdfDocument now return only objects that are actually used in the document.
PdfDocument.DocumentsAreEqual methods now ignore time-dependent information in document security store (DSS).
The PdfFileSpecification.SetCustomName method is marked as obsolete.

Visit our LinkedIn page | Telegram channel | Google Group