Latest release (March 2026)

Full list of changes in this release

Key	Category	Summary
VIEWERNET‑5551	New feature	Add option to render placeholders in headers and footers of slide
VIEWERNET‑5550	Bug	Content added to PowerPoint footer is not visible when rendering to all output formats
VIEWERNET‑5530	Bug	Incorrect rendering of arabic fonts when converting DOCX to PDF
VIEWERNET‑5408	Bug	Slow rendering speed PDF to HTML
VIEWERNET‑4964	Bug	Malformed text during saving PDF to HTML when custom DefaultFontName is applied
VIEWERNET‑4941	Bug	Intermittent Character rendering Errors on Windows Server 2019
VIEWERNET‑5024	Bug	PDF to HTML: Text not converted correctly
VIEWERNET‑5514	Bug	Incorrect processing of explicit page numbering during consecutive calls for Spreadsheet formats family
VIEWERNET‑5513	Bug	Invalid WordProcessing document generation in trial mode with explicitly specified page number is out of trial limit
VIEWERNET‑5480	Bug	PDF rendering is completely broken
VIEWERNET‑5515	Bug	TIFF rendering throws exception with Cross-platform Viewer on Linux
VIEWERNET‑4540	Bug	PDF file displayed incorrectly, with letters changed and lines shifted
VIEWERNET‑5516	Bug	Invalid WordProcessing to PDF view generation in licensed mode when passed a page number greater than the total number of pages in the document
VIEWERNET‑5577	Improvement	Implement detection and wrapping of raw URIs in mail message body
VIEWERNET‑5550	Bug	Content added to PowerPoint footer is not visible when rendering to all output formats (reopened from v25.11)
VIEWERNET‑5241	Bug	Formatting of numbers, datetimes and money values is broken when converting PDF to HTML
VIEWERNET‑4709	Bug	PDF to HTML: Whole resultant file become link
VIEWERNET‑5568	Bug	Hyperlinks in email body are not clickable
VIEWERJAVA‑4048	Bug	XLSX to HTML: Autofit is not applied for row number
VIEWERJAVA‑4058	Bug	NullPointerException in font resolution on Docker due to missing LOCALAPPDATA
VIEWERJAVA‑4060	Enhancement	Excel rendering produces low-resolution text compared to PDF when converting to JPG ( or PNG)

Public API changes

Added

com.groupdocs.viewer.options.PresentationOptions.isRenderHeaderFooterPlaceholders() boolean property (VIEWERNET‑5551)

Removed

None

New Features

Added HorizontalResolution and VerticalResolution properties to the SpreadsheetOptions class, allowing users to control the output image resolution (in DPI) when rendering spreadsheets to PNG and JPEG formats.

Code Example

Path pageFilePathFormat = Paths.get("page_{0}.png");

PngViewOptions viewOptions = new PngViewOptions(pageFilePathFormat);
viewOptions.getSpreadsheetOptions().setHorizontalResolution(300);
viewOptions.getSpreadsheetOptions().setVerticalResolution(300);
try (Viewer viewer = new Viewer("sample.xlsx")) {
    viewer.view(viewOptions);
}