Added accessibility improvements using semantic HTML5 tags, ARIA roles, and labels to help meet modern accessibility standards (EPUB2479).

Implemented SEO enhancements including automatic sitemap.xml generation, configurable robots.txt, Open Graph meta tags, and Twitter Card support (EPUB2551).

Added Landmark ID system for stable, content-based navigation URLs that persist across documentation regenerations (EPUB2641).

Added Share Widget enabling end users to copy and share direct links to specific content locations using Landmark IDs (EPUB2672).

Added Click to Zoom functionality allowing users to view images in an enlarged lightbox overlay (EPUB2512).

Implemented cache busting mechanism to ensure browsers load the latest resource versions after documentation updates (EPUB2628).

Added Search Results Breadcrumbs showing the location of each result within the documentation hierarchy (EPUB2601).

Added front page behavior setting for collapsed/open TOC state (EPUB2616).

Added --skip-reports CLI option to skip report generation during builds, improving conversion times on large projects (EPUB2663).

Fixed Administrator to allow Designer projects (.wep) in Jobs, in addition to Express projects (.wrp) (EPUB2655).

Automatic markers such as PageStyle, GraphicStyle, and IndexMarker are now emitted in Markdown++ output without requiring Stationery configuration (EPUB2637).

Fixed image files missing DPI property that reported zero size height and width (EPUB2665).

Fixed link references in multiline tables that failed to render (EPUB2679).

Removed the deprecated XML+XSL output format (EPUB2654).

Added null check for adapter in ToolFactory GetAdapterInfo (EPUB2678).

Added XSLT examples to C# XSLT extension XML documentation comments (EPUB2673).