Foxit Conversion SDK v3.1.0

Release Date: 31 March 2026

Breaking Changes

PDF2WordSettingData — Parameter change and default value change

Constructor and Set() method add a required max_blank_paragraphs_per_page_bottom parameter:

// v3.0 (4 parameters)
PDF2WordSettingData(bool enable_retain_page_layout,
    bool enable_generate_headers_and_footers,
    bool enable_generate_footnotes_and_endnotes,
    bool enable_generate_page_rendered_break);

// v3.1 (5 parameters)
PDF2WordSettingData(bool enable_retain_page_layout,
    bool enable_generate_headers_and_footers,
    bool enable_generate_footnotes_and_endnotes,
    bool enable_generate_page_rendered_break,
    int max_blank_paragraphs_per_page_bottom);  // new

Action required: Add the new parameter when using the parameterized constructor or Set(). Pass -1 for unlimited (matching previous behavior). Alternatively, use the default constructor with field assignment.

Default value change — enable_generate_headers_and_footers changed from false to true. Code using the default constructor will now generate headers and footers. Set enable_generate_headers_and_footers = false explicitly to preserve previous behavior.

PDF2PowerPointSettingData — Parameter change

Constructor and Set() method add a required enable_adapt_to_largest_page parameter:

// v3.0 (1 parameter)
PDF2PowerPointSettingData(bool enable_aggressively_split_sections);

// v3.1 (2 parameters)
PDF2PowerPointSettingData(bool enable_aggressively_split_sections,
    bool enable_adapt_to_largest_page);  // new

Action required: Add the new parameter. Pass false to preserve previous behavior.

PDF2ExcelSettingData — Parameter change

Constructor and Set() method add 2 required parameters:

// v3.0 (3 parameters)
PDF2ExcelSettingData(String decimal_symbol, String thousands_separator,
    WorkbookSettings workbook_settings);

// v3.1 (5 parameters)
PDF2ExcelSettingData(String decimal_symbol, String thousands_separator,
    WorkbookSettings workbook_settings,
    bool enable_aggressive_table_repair,  // new
    bool include_watermarks);             // new

Action required: Add 2 new parameters. Pass true, false to preserve previous behavior.

PDF2OfficeSettingData — Parameter change

Constructor and Set() method add a required enable_matching_system_fonts parameter:

// v3.0 (9 parameters)
PDF2OfficeSettingData(const wchar_t* metrics_data_folder_path,
    bool enable_ml_recognition, const Range& page_range,
    bool include_pdf_comments,
    const PDF2WordSettingData& word_setting_data,
    const PDF2PowerPointSettingData& power_point_setting_data,
    const PDF2ExcelSettingData& excel_setting_data,
    bool enable_trailing_space, bool include_images);

// v3.1 (10 parameters)
PDF2OfficeSettingData(/* same 9 parameters */,
    bool enable_matching_system_fonts);  // new

Action required: Add the new parameter. Pass false to preserve previous behavior.

PDF-to-Word default behavior change

PDF-to-Word conversion now preserves document internal navigation links by default. If downstream workflows depend on link-free Word output, verify conversion results after upgrading.

New Features and Enhancements

PDF to Office

• Add enable_matching_system_fonts parameter to PDF2OfficeSettingData for system font matching in PDF-to-Word conversion
• Add enable_adapt_to_largest_page parameter to PDF2PowerPointSettingData to unify slide size by scaling smaller pages to the largest page dimension
• Add enable_aggressive_table_repair and include_watermarks parameters to PDF2ExcelSettingData to strengthen table structure repair and control whether watermark content is retained in Excel output
• Improve PDF-to-Word conversion to preserve document internal navigation links (TOC, cross-references) by default
• Improve PDF-to-Word conversion performance and reduce memory usage for complex documents
• Improve PDF-to-Word heading recognition accuracy for better Word heading style mapping
• Improve PDF-to-Word paragraph recognition, page break handling, and cross-page table continuity

Office to PDF

• Add Linux platform support for Office2PDFSettingData::is_embed_font font embedding
• Add DOC (Word 97-2003) format support to Office2PDF::ConvertFromWord
• Add e_ErrNotMatchFont error code for font-missing scenarios in Office-to-PDF conversion

Platform

• Add Linux ARM64 .NET Core platform support

Bug Fixes

PDF to Word

• Fix crash when converting specific PDF files to Word on Linux .NET platform
• Fix conversion failure producing no output file for specific documents
• Fix exception (0x77574080 ntdll.dll) in MFC-based projects during PDF-to-Word conversion in Debug x86 mode
• [Linux] Fix incorrect font substitution where Song typeface renders as Hei in converted Word output
• Improve font selection to avoid Segoe UI Light for better cross-application compatibility with WPS Office
• Fix font style loss (e.g., bold) in converted Word documents
• Fix incorrect font size in conversion output causing layout disruption
• Fix extra spaces between characters in paragraph text of converted Word output
• Fix title character overlap in converted Word documents
• Improve layout stability for translation round-trip workflows where longer translated text caused subsequent page disruption
• Fix crop marks at page corners interfering with third-party translation software
• Fix table of contents misalignment in converted Word documents
• Fix layout misalignment in converted Word output for specific files
• Fix PDF headers and footers incorrectly converted as body text instead of Word header/footer sections
• Fix extra line breaks at end of text lines causing layout disruption during translation write-back
• Fix Arabic content loss during PDF-to-Word conversion
• Improve conversion quality for large documents: reduce layout issues, output file size bloat, and excess page count
• Improve cross-application rendering consistency between Microsoft Office and WPS Office
• Fix faded text, abnormal table rendering, content loss, and text overlap for specific files
• Fix table of contents loss or corruption with headings not recognized in converted output
• Fix enable_generate_headers_and_footers = true not taking effect in PDF2WordSettingData

PDF to Excel

• Fix cell text placed inside drawing shapes instead of editable cells
• Fix excessive conversion time and incorrect table structure with cells appearing as images
• Fix content loss when converting built-in test documents

Word to PDF

• Fix crash in Office2PDF::ConvertFromWord when converting specific DOCX files
• Fix hang with memory spike to 4 GB when converting specific Word files
• Fix table content loss in specific regions during conversion
• Improve character spacing and paragraph layout fidelity on Windows
• Fix is_embed_font = true not taking effect on Windows in Office2PDFSettingData
• [Linux] Fix blank PDF output on Red Hat systems missing Calibri font
• Fix incorrect character spacing causing line break differences from original Word document
• Fix bold text appearing excessively thick in converted PDF output
• Fix missing last sentence in converted PDF for specific documents
• Fix graphical shape rendering deviations and incorrect text line breaks

Foxit Conversion SDK v3.0.0

Release Date: 31 July 2025

Breaking Changes

• Linux GCC minimum supported version changed from 4.9.4 to 5.4
• Node.js library drops support for Node.js v8 and v9

New Features and Enhancements

PDF to Office

• Add Go language support for Linux 32/64-bit platforms
• Add Python ABI3 compatibility for broader Python version support
• Improve text paragraph recognition to reduce text box output
• Improve conversion stability and output standardization
• Improve border table recognition
• Improve nested table output appearance in PDF-to-Word conversion
• Improve header/footer recognition in PDF-to-Word conversion
• Improve heading recognition in PDF-to-Word conversion
• Improve table output quality in PDF-to-Excel conversion

Office to PDF

• Add Linux platform support for Office-to-PDF conversion
• Improve font loading performance for faster conversion
• Add multi-level nesting support for Drawing and Paragraph elements in Word-to-PDF conversion
• Add vertical paragraph alignment in Drawing objects for Word-to-PDF conversion
• Add PowerPoint page-level navigation support in PPT-to-PDF conversion

Bug Fixes

PDF to Word

• Fix converted Word document content being non-editable
• Fix crash during PDF-to-Word conversion stress testing with GSDK 10.0 Java Linux version
• Fix PDF-to-Word conversion getting stuck without producing output

PDF to PowerPoint

• Fix extra gray background block in PDF-to-PPT conversion output

Word to PDF

• Fix incorrect conversion of complex Word layouts with nested Drawing and Paragraph elements
• Fix Drawing objects with vertical paragraph alignment not rendering correctly
• Fix multi-layer Drawing objects displaying incorrectly
• Fix PowerPoint page-level navigation not being supported

Foxit Conversion SDK v2.1.0

Release Date: 16 December 2024

New Features and Enhancements

PDF to Office

• Add page break insertion option via PDF2WordSettingData enable_generate_page_rendered_break parameter
• Add trailing space removal and image inclusion options via PDF2OfficeSettingData
• Add Excel workbook settings via PDF2ExcelSettingData
• Add restricted PDF file conversion support
• Add ConvertCheckCallback class and SetConvertCheckCallback() for conversion validation
• Update PDF2Office::Initialize() to accept fx_binary_program_path for improved conversion flexibility
• Improve table, formula, and highlighted text recognition in PDF-to-Word conversion
• Improve cell border and background recognition in PDF-to-Excel conversion
• Improve content integrity for converted text and paths in PDF-to-PPT conversion
• Improve processing efficiency for files with complex path structures
• Improve overall program stability to prevent memory leaks

Office to PDF

• Add outline conversion support in Word-to-PDF via Word2PDFConfig
• Add workbook conversion options in Excel-to-PDF via Excel2PDFConfig
• Improve support for complex layouts including vertical text
• Improve preservation of gradients, multi-column alignment, and 3D elements
• Improve large file conversion stability and efficiency through memory optimization

Foxit Conversion SDK v2.0.0

Release Date: 18 March 2024

New Features and Enhancements

Office to PDF

• Add Office-to-PDF conversion support for Windows (Word, Excel, PowerPoint) — beta

PDF to Office

• Add footnote and endnote generation in PDF-to-Word conversion via enable_generate_footnotes_and_endnotes parameter
• Add header and footer generation in PDF-to-Word conversion via enable_generate_headers_and_footers parameter
• Add PDF2ExcelSettingData class for decimal symbol and thousands separator configuration
• Improve text block recognition accuracy in PDF-to-PowerPoint conversion

Platform

• Add AnyCPU configuration support for Dotnet/DotNetCore

Bug Fixes

• Fix conversion failure or slowdown due to high memory usage
• Fix crash when converting specific pages containing borderless tables in PDF-to-PPT conversion
• Fix text conversion anomalies including inconsistent fonts, text rendered as images, missing text, position offset, and overlap
• Fix incorrect underline recognition and extra spaces/line breaks in PDF-to-Word output
• Fix text content misidentified as tables in PDF-to-PPT conversion
• Fix multiple lines of text placed in same cell in PDF-to-Excel conversion
• Fix inconsistent page numbers and pages split into multiple pages in PDF-to-Word output

Foxit Conversion SDK v1.5.0

Release Date: 07 November 2023

New Features and Enhancements

PDF to Office

• Add page range, PDF comment inclusion, and page layout retention settings via PDF2OfficeSettingData
• Improve KaiTi font support
• Improve chart recognition and output display
• Improve WPS Office compatibility for consistent formatting and font colors

Bug Fixes

PDF to Word

• Fix incorrect text styling including missing bold formatting and inconsistent font sizes
• Fix text overlap after conversion
• Fix page-level outline recognition and output issues
• Fix list recognition failures for specific files
• Fix highlight style and annotation display issues
• Fix inconsistent watermark layout between Word and PDF after conversion
• Fix missing title and author information in document properties
• Fix increased page count in output for specific files
• Fix text objects incorrectly recognized as shape objects for dual-layout content
• Fix extra empty paragraphs generated in output

PDF to Excel

• Fix extended processing time and freezing for specific files
• Fix incomplete number display in cells after conversion
• Fix reduced text size within cells after conversion
• Fix shifted content within cells after conversion
• Fix cell content wrapping after conversion
• Fix missing cell backgrounds after conversion

Foxit Conversion SDK v1.4.0

Release Date: 22 August 2023

New Features and Enhancements

PDF to Office

• Add heading conversion support from PDF to Word

Platform

• Add Linux C library support
• Update Node.js compatibility to the latest version

Bug Fixes

• Update OpenSSL to version 1.1.1 to address known vulnerability
• Fix numeric bullet point changes in PDF-to-Word output
• Fix bullet point misalignment in PDF-to-Word output
• Fix inconsistent content display in PDF-to-Excel output when opened in WPS Office
• Fix inconsistent display of converted files across different office editors
• Fix missing fonts and inconsistent font appearance in PDF-to-Word conversion for specific files
• Fix Calibri font changing to another font in PDF-to-Word output
• Fix table column width reduction causing data misalignment in PDF-to-Excel output
• Fix solid color cell backgrounds not properly recognized in PDF-to-Excel conversion
• Fix text becoming invisible after zooming in on PDF-to-Excel output in specific office editors

Foxit Conversion SDK v1.3.0

Release Date: 09 June 2023

New Features and Enhancements

PDF to Office

• Add clip-path text recognition and conversion
• Add PDF pop-up comment and reply conversion to Word review comments in PDF-to-Word

Platform

• Add Linux platform support
• Add multi-threading and thread safety

Bug Fixes

• Fix missing spaces in converted output for specific files
• Fix incorrect recognition and conversion of underlined text
• Fix text being converted into images in specific files
• Fix crash and memory leak issues in Office conversions
• Fix misaligned paragraph formatting after converting text with highlighted StyleSpan

Foxit Conversion SDK v1.2.0

Release Date: 04 April 2023

New Features and Enhancements

Platform

• Add Node.js conversion library hosted on GitHub
• Add Visual Studio 2019 and 2022 demo projects

Foxit Conversion SDK v1.1.0

Release Date: 03 March 2023

New Features and Enhancements

PDF to Office

• Add AI-powered borderless table recognition via machine learning HTTP Restful API (enable_ml_recognition option)

Foxit Conversion SDK v1.0.0

Release Date: 17 January 2023

New Features and Enhancements

• Initial release supporting PDF-to-Word, PDF-to-Excel, and PDF-to-PowerPoint conversion on Windows
• Supported languages: C/C++, C# (DotNet, DotNetCore), Java, Node.js, Python