Released: Apr 29, 2026

2026.5.2 中的更新

特性

• Added SignerCertificate and CertificateChain properties to VerifiedSignature, exposing full X.509 certificate details including Subject DN, Issuer, Serial Number, validity period, and raw DER bytes from digitally signed PDFs.
• Added LinkAnnotation class for creating clickable links within PDF documents that navigate to specific pages and positions.
• Added LinearizePdfToBytes and LinearizePdfToStream methods, enabling fully in-memory PDF linearization without disk I/O, ideal for cloud-based and...

Released: Mar 27, 2026

2026.4.1 中的更新

特性

• Improved PDF rendering performance by reducing internal render calls and reusing browser tabs to minimize startup overhead.
• Improved PDF/UA structure tree tagging for forms with mixed input types, hidden elements, deeply nested labels, and annotation ordering to ensure correct widget-to-structure element association.
• Improved IronPdfEngine Docker image security by removing unnecessary packages, resolving 4 high-severity CVEs and over 1,400 other security scan findings.
• Improved IronPdfEngine...

Released: Mar 1, 2026

2026.3.1 中的更新

特性

• Added CompressPdfToBytes and CompressPdfToStream with automatic smart compression, reducing PDF size via disk or in-memory processing.
• Improved PDF/UA accessibility support by resolving structural tagging errors, restoring semantic tags (H1/P), fixing label rendering issues, eliminating AccessViolationException crashes during form processing, and preventing duplicate accessibility tags.
• Enhanced signature validation with certificate trust chain, revocation status, algorithm strength, byte...

Released: Feb 17, 2026

2026.2.1 中的更新

特性

• Updated internal dependencies.

Released: Feb 11, 2026

2026.1.3 中的更新

特性

• Added support for Custom Hyphenation via local paths or remote URLs in ChromePdfRenderOptions.
• Enhanced UpdateImageObject with a robust state-tracking transformation system.
• Enhanced copying pages from existing PDF to avoid Stack Overflow exception for some specific documents.

修补程序

• Fixed issue where getting a form field with Unicode characters causes IronPDF to freeze.
• Fixed an issue where converting certain PDFs to PDF/UA could cause text and shape colors to be reset or rendered incorrectly...

Released: Dec 26, 2025

2025.12.2 中的更新

特性

• Added support for PDF/UA-2 (ISO 14289-2:2024) compliance.
• Added new CompressAndSaveAs API which provides superior compression.
• Added ToJson and SaveAsJson APIs to extract PDF content as JSON.
• Enabled local HTML file to PDF conversion in IronPDF for Java and Node.js when running local IronPdfEngine.
• Improved documentation and examples.

修补程序

• Fixed issue where ApplyMultipleStamps cut off the stamp content on some paper sizes.
• Fixed internal deployment issue of IronPDF for Python.
• Fixed QPdf...

Released: Nov 10, 2025

2025.11.12 中的更新

特性

• Added support for PDF/A-4, PDF/A-4E, and PDF/A-4F (ISO 19005-4:2020) compliance.
• Added support for signing PDFs with a Hardware Security Module (HSM) via USB token.
• Improved memory usage in the form generation flow (PDF-1599).

修补程序

• Fixed an issue where the header and footer were in an invalid location when applied to rotated landscape pages.
• Fixed an issue where converting certain PDFs to PDF/A 1a/1b failed validation due to an invalid CIDSet in subsetted fonts.
• Fixed an issue where IronPDF...

Released: Oct 8, 2025

2025.10.8 中的更新

特性

• Added new SaveAsLinearized and IsLinearized APIs.

修补程序

• Fixed an issue where certain HTML blocks, links, or text nodes were not correctly processed in HtmlStructTreeDom, leading to exceptions while generating PDF/UA.
• Fixed an issue where the CSS hyphens: auto rule was not being applied.
• Fixed an issue where parent bookmarks with the same name under different parents were incorrectly replaced.
• Fixed a memory leak issue when using Cleaner.ScanPdf.
• Fixed a performance regression when applying...

Released: Sep 2, 2025

2025.9.4 中的更新

特性

• Added a new IgnorePageRotation flag to DrawBitmap() for ignoring the page's rotation.
• Reduced PDF file size when applying the same Stamp, Background/Foreground, Header/Footer to multiple pages.

修补程序

• Fixed VeraPDF validation failure for PDF/UA compliance related to link annotation missing the appropriate StructParent.
• Fixed an issue where VeraPDF PDF/3A validation fails when fonts lack both /ToUnicode and /Encoding.
• Fixed a major memory leak issue when rendering HTML to PDF.
• Fixed memory leak...

Released: Aug 13, 2025

2025.8.8 中的更新

特性

• Added a new VerifiedSignature.SignerName property for accessing the digital signer name.
• A PDF with form fields is now automatically flattened when converted to images, ensuring form values appear by default.

修补程序

• Fixed an issue where saving a PDF as PDF/UA after saving it as PDF/A would throw an AccessViolationException in certain cases.
• Fixed an issue where PDF/UA conversion threw an AccessViolationException when converting certain PDF pages to PDF/UA.
• Fixed an issue where long HTML header...