ComPDF SDK Versions

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Découvrez les nouveautés dans chaque version, avec des détails sur les fonctionnalités, les améliorations et les problèmes résolus.

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ComPDF SDK for iOS 3.0.228 sept. 2026
Fonctionnalités
  • Updated the third-party dependencies of PDFium and fixed known security vulnerabilities.
  • Adjusted the minimum system version (iOS 13.0 / Simulator 14.0 / Catalyst 14.0 / macOS 11.0).
  • Optimized the rendering and loading time during iOS zooming.
Corrections
  • Fixed the issue with incorrect rectangular range when editing search text content.
ComPDF SDK for Android 3.0.228 sept. 2026
Fonctionnalités
  • Updated PDFium third-party dependencies and fixed known security vulnerabilities.
Corrections
  • Fixed an issue where the rectangle bounds for text search during content editing were incorrect.
ComPDF SDK for iOS 3.0.113 août 2026
Corrections
  • Fixed the issue in the SDK that caused automatic exit from full-screen mode.
  • Fixed the crash that occurred when editing and saving special document content.
ComPDF SDK for Android 3.0.113 août 2026
Fonctionnalités
  • Improved text selection calculations for rotated pages and scanned OCR documents, resulting in more accurate text selection, selection handle dragging, and Markup annotation placement.
Corrections
  • Fixed an issue where text selection and highlight regions could have incorrect heights and extend beyond the top of the text on some rotated pages with hidden OCR text layers.
  • Fixed an issue where CPDFBackground#getOpacity() returned an incorrect value for valid background objects.
ComPDF SDK for iOS 3.0.0Version majeure6 août 2026
Fonctionnalités
  • Ink annotations now support a mixed undo/redo history mode: strokes and document annotation operations are included in the same undo stack, and are uniformly undone and restored according to the actual operation sequence.
  • A new "pageSameWidth" (equal-width page) preview mode has been added.
  • It is now possible to set the maximum zoom ratio for PDFView.
  • Form annotations now support custom background colors when in read-only mode.
  • Japanese language support has been added.
  • Optimized the UI layer performance of the drag-and-drop control when scaling in the content editing and annotation mode.
  • Improved the interaction details between text selection and page scrolling.
  • Reconstructed the structure of the Stamp annotation rotation method to better adapt to the logic related to annotation rotation.
  • Optimized the inconsistent rendering effect of the text annotation appearance flow (AP).
Corrections
  • Fixed the issues of incorrect watermark rotation angle and ineffective modification of watermark attributes when repeatedly performed.
  • Fixed the problem of being unable to open network links in certain system versions.
ComPDF SDK for Android 3.0.0Version majeure6 août 2026
Fonctionnalités
  • Raised the minimum supported Android version to API 23 (Android 6.0).
  • Added mutually exclusive selection support for RadioButton form fields within the same group.
  • Added accessibility configuration support to the ComPDFKit_Tools module.
  • Added multithreaded PDF page rendering support.
  • Added Japanese language support.
  • Added a hybrid Undo/Redo history mode for Ink annotations, allowing ink strokes and document annotation operations to be restored in their actual undo order.
  • Improved page editing in the ComPDFKit_Tools module, enhancing page copy stability and thumbnail refresh performance.
  • Improved storage permission handling and related error messages in the ComPDFKit_Tools module.
  • Improved network security configuration in the ComPDFKit_Tools module.
  • Improved current-page callback logic in two-page reading mode to ensure consistent page number callbacks during page transitions.
  • Improved reader gesture recognition.
Corrections
  • Fixed an issue where same-width pages were not displayed correctly in horizontal continuous reading mode, improving layout consistency across different screen sizes.
  • Fixed an issue where swiping while zoomed in could unintentionally trigger page navigation.
  • Fixed incorrect page positioning and sizing when switching to full-screen mode in the ComPDFKit_Tools module.
  • Fixed an issue where scrolling or double-tap zooming could remove text and Markup selections.
ComPDF Conversion SDK V4.0.0Version majeure22 juin 2026
Fonctionnalités
  • Multi-threading Support - Faster PDF Conversion:
    • When processing hundreds or thousands of documents, single-threading is constrained by single-core utilization and sequential processing bottlenecks, resulting in severely insufficient overall throughput. Added official support for external multi-threaded invocation, employing thread pools and task partitioning to split batch documents into multiple parallel workflows, significantly improving system concurrency and resource utilization.
    • Typical scenarios include:
      • SaaS document platforms (multi-tenant concurrent requests).
      • Enterprise document centers (petabyte-scale batch migration).
      • Large-scale OCR services (thread scheduling optimization for CPU/GPU heterogeneous preprocessing).
      • AI document processing platforms (pipeline parallelism for preprocessing and inference).
      • Automated archival systems (high-frequency batch processing of small files).
    • For high-concurrency workloads, upgrading from single‑thread to multi-thread can significantly reduce total processing time (especially for I/O‑intensive or mixed workloads), while reducing the number of server nodes required to meet SLAs, directly lowering infrastructure costs.
  • PDF Layout Restoration Upgraded by Refined Text and Paragraph Styles:
    • At its core, high-precision layout restoration represents OCR technology's deep understanding of a document's original structure and visual perception. The new version delivers more refined layout and style restoration through the following key improvements:
      • Style restoration support – More detailed preservation of original text attributes (font, size, color) and image positions, reduces layout inaccuracies caused by style mismatches.
      • More natural paragraph reconstruction – Upgrades paragraph alignment restoration, aggregation logic, line height, and more. It reduces issues such as paragraph crowding and inconsistent paragraph alignment.
      • More accurate line and character spacing - Resolves common OCR issues such as text crowding or excessive looseness, resulting in a cleaner, more professional overall layout.
      • Output layout closer to the original document – From element positioning to full-page composition, achieves high-fidelity restoration that preserves the original visual hierarchy.
    • An upgrade from general layout restoration to precision layout restoration when OCR is enabled, delivering more reliable and readable conversion results for document digitization workflows.
  • Integrated AI Table Recognition - Drastically Improved Table Restoration:
    • Better restoration of bold, font, size, color, and alignment for text inside tables.
    • Automatic aggregation of multi-line text.
    • Improved table hierarchy, header-region detection, and merged-cell recognition.
    • Supported outputs: PDF to Word / Excel / PPT / RTF / HTML / Markdown / XML.
    • Highlight: Text paragraph aggregation inside tables automatically merges multi-line content into natural paragraphs while preserving original alignment.
  • Render Vector Graphics (Path Objects) as Images:
    • Added independent image rendering for non-table path objects to achieve:
      • More complete preservation of original visual effects.
      • Reduced graphic distortion.
      • Improved restoration quality for complex layouts.
    • This is especially effective for flowcharts, structural diagrams, and engineering drawings.
  • Expanded Thai Font Library:
    • Higher Thai character recognition accuracy.
    • Fewer font substitution issues.
    • More natural OCR layout outcomes.
  • Document Directory Link Navigation Support (PDF to Word):
    • Added restoration for internal PDF links, including table-of-contents jumps, chapter links, and internal anchors. These links remain usable after PDF to Word conversion.
    • This is highly valuable for user experience in: eBooks, technical documentation, government standard documents, and long-form reports.
  • PDF to Searchable PDF Conversion:
    • Introduced searchable PDF as an output format. Its core mechanism preserves the original scanned image layer while overlaying a transparent OCR text layer, enabling full-text search without altering the document's original visual appearance.
    • This means users can precisely locate the position of the information they need within the document, achieving efficient information retrieval and content positioning - without text reflow that would disrupt the original layout and visual structure.
    • This capability is especially valuable in scenarios where preserving the original visual fidelity is critical, such as archival digitization, compliance archiving, legal document storage, and historical document digitalization.
  • PDF/Image to Searchable OFD:
    • Added the ability to convert PDFs and images into searchable OFD files, preserving the original typography, styling, and layout while supporting operations such as search, highlight, and annotation.