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Changelog

[3.2.16] - 2026-04-24

  • Added global Utils.MuPDFLock and synchronized MuPDF native calls for improved thread safety.
  • Improved Tesseract OCR stability in the PDF4LLM OCR pipeline and hardened OCR helper behavior.
  • Fixed a regression in Llama LoadData and added a new TableExtract demo sample.
  • Updated PDF4LLM package metadata and NuGet project files.

[3.2.15] - 2026-04-17

  • Migrated the helper package from MuPDF.NET4LLM to PDF4LLM and refreshed the package layout, demos, and documentation.
  • Added file-path overloads for ToMarkdown, ToJson, and ToText helpers.
  • Updated PDF4LLM package support for the latest MuPDF bindings and metadata.

[3.2.14] - 2026-03-23

  • Fixed issue #234 in page/text utilities and added a regression test in UtilsTest.
  • Minor PDF4LLM documentation and comment updates.

[3.2.13] - 2026-03-18

  • Added MuPDF.NET4LLM as a separate NuGet package: LLM/RAG helpers for PDF-to-Markdown conversion, layout parsing, document structure analysis, and LlamaIndex integration. Install via dotnet add package MuPDF.NET4LLM; depends on MuPDF.NET.
  • Fixed DocumentWriter leak in Story.WriteWithLinks and Story.WriteStabilizedWithLinks (dispose via using).
  • Made DocumentWriter.Dispose() idempotent; added ObjectDisposedException for BeginPage/EndPage after dispose.
  • Hardened exception safety: added try/finally for Document.Save, Document.Object2Buffer, Document.ObjString, Document.JournalSave, Pixmap.ToBytes, TextPage.ExtractText, Page.GetSvgImage, and Utils.Object2Buffer so native resources are released on exception.

[3.2.13-rc.14] - 2026-02-11

  • Upgraded MuPDF.NativeAssets to 1.27.2 and refreshed generated MuPDF bindings for Windows and Linux.
  • Implemented IDisposable on core types (Document, Page, TextPage, Story, DocumentWriter, DisplayList, Font, GraftMap, DeviceWrapper, Outline) and made Document.Dispose() idempotent.
  • Hardened native resource handling (e.g. Document.Convert2Pdf, Pixmap.InvertIrect) to be exception-safe, fixed Pixmap.InvertIrect null/stencil handling, and added tests for table extraction and disposal patterns.

[3.2.13-rc.6] - 2025-12-26

  • Fixed the issues in ResolveNames method.
  • Fixed the issues in DrawShape

[3.2.12] - 2025-11-25

  • Added ImageFilterPipeline with SkiaSharp-based filters and integrated it into OCR.
  • Improved Pixmap disposal, OCR helpers, and image filter application.

[3.2.11] - 2025-10-20

  • Fixed issues related to the older Linux version.
  • Resolved the issue that occurred when deleting an already managed document.

[3.2.10] - 2025-10-07

  • Replaced all Windows System.Drawing dependencies with SkiaSharp.
  • Added support for 32-bit .NET projects in Visual Studio 2019.
  • Fixed issues with Unicode file names.

[3.2.10-rc.5] - 2025-09-16

  • Removed margin parameter in write barcode.
  • Added new marginLeft,marginTop,marginRight,marginBottom parameters to barcode creation.

[3.2.10-rc.3] - 2025-09-12

  • Upgrade MuPDF.NativeAssets to 1.26.8.
  • Added a new method "Utils.GetBarcodePixmap" into barcode write module.

[3.2.10-rc.2] - 2025-09-11

  • Added a new parameter "narrowBarWidth" into barcode write module.

[3.2.10-rc.1] - 2025-09-03

  • Added a new barcode rendering engine.
  • Removed all dependencies on ZXing.

[3.2.9] - 2025-08-28

  • Deployed new release

[3.2.9-rc.15] - 2025-08-22

  • Fixed PDF file handle leak caused by unreleased FzPage in DisplayList.
  • Resolved memory leak in DocumentWriter (caused by missing FilePtrOutput).
  • Added Dispose() in Story.
  • Added Dispose() in TextPage.

[3.2.9-rc.11] - 2025-08-12

  • Updated barcode reader for low quality images/pages.