Presentations Changelog

This changelog summarizes presentation-facing changes grouped by api/* release tag. It omits tags without user-visible PPTX changes.

api/v2.49.0 - 2026-06-12

Improved slide rendering fidelity for inherited text, visual formatting, backgrounds, and placeholder fields by resolving PowerPoint cascades more accurately across slides, layouts, masters, theme color maps, and presentation defaults; see Slides, Layouts, and Masters, Themes and Color Schemes, and Text and Hyperlinks.
Matched more PowerPoint color behavior for tint and shade transforms, including legacy gamma-wrapped transforms and midpoint rounding; see Themes and Color Schemes and Render.
Improved grouped shape and table geometry by reporting grouped shapes in slide-space coordinates, resolving line visibility and width through inherited fills and line references, calculating table bounds from row and column sizes, and adding built-in Table Grid and No Grid table styles; see Groups, Tables, and Render.
Improved chart label and trendline-equation rendering through the shared chart engine, including localized decimal separators; see Charts and Render.

Added support for PowerPoint scrgb colors, HSL colors, and percentage RGB color literals, improving read, save, and render fidelity for decks that use those color forms; see Themes and Color Schemes and Render.

Completed chart authoring and rendering for radar, surface, and all supported modern ChartEx families in PPTX charts, including statistical bin options, box-and-whisker options, fallback images, and cached chart data; see Charts, Modern Chart Families, and pptx API chart extensions.
Improved scoped theme color authoring and rendering, including theme color transforms and preservation of unsupported color references when decks are read and saved; see Themes and Color Schemes.
Improved slide rendering for SmartArt frames, mc:AlternateContent, grouped shape and connector strokes under transforms, inherited bullet formatting, and symbol bullet fonts; see Render, Groups, and Paragraph formatting.

Added slide layout and slide master authoring support, including layout placeholders, placeholder fills, master theme cloning, scoped theme color schemes, and slide theme override inheritance; see Slides, Layouts, and Masters.
Matched more PowerPoint Office.js behavior for addTable sizing, adjustment defaults, argument coercion, placeholder inheritance, hidden lines, and model-layer edge cases.
Added box-and-whisker chart authoring/rendering support and improved radar and box-and-whisker rendering through the shared chart engine; see Charts.

Added histogram, Pareto, surface, wireframe surface, and funnel chart authoring/rendering support through the shared chart engine used by PPTX charts; see Charts.
Improved statistical chart header inference and text handling for generated chart data.

Added Office.js support for addPicture, active slide preview APIs, graphic preview objects, slide selection events, slide layout/master delete preview APIs, sensitivity label preview stubs, and SVG graphic conversion.
Added PowerPoint-backed render baselines, all-slide render snapshots, and PPTX render parity coverage; see Render.
Added waterfall and radar chart support through the shared chart engine, including ChartEx serialization improvements used by presentation chart authoring; see Charts.

Added stock chart rendering and authoring support for PPTX charts, including OHLC and volume stock variants; see Charts.
Added multi-level axis category label support in the shared chart engine used by presentation charts.

Added PowerPoint chart authoring APIs: ShapeCollection.addChart, Shape.getChart, Chart.setData, Chart.setDataRange, chart title and legend editing, data labels, chart/series/axis format hosts, chart series, axes, and labels; see pptx API chart extensions.
Aligned chart API property behavior with Office.js conventions and preserved chart names, width-only lines, borders, and label formatting.
Improved chart plot area, tint, category-axis crossing, manual legend positioning, display-unit labels, span-blanks defaults, and secondary bar baseline rendering through the shared chart engine.

Added witan pptx exec endpoints for sandboxed Office.js-compatible TypeScript or JavaScript against presentations, including TypeScript parsing, writesDetected, script-produced image output, and local Office.js validation errors; see CLI Scripting.
Hardened presentation mutation safety for relationships, slide references, imported slide graphs, scalar tokens, numeric bounds, XML strings, oversized font sizes, removed object handles, text line breaks, themes, and app metadata.
Moved chart authoring internals into the shared chart engine that later powers PPTX chart creation.

Added the first PPTX model, RPC server, render pipeline, and API routes for witan pptx render; see Render.
Added the initial Office.js-compatible PowerPoint runtime and model-backed authoring surface for presentations, slides, layouts, masters, shapes, pictures, connectors, text, hyperlinks, tables, custom data, theme data, groups, placeholders, backgrounds, and document properties; see pptx API.
Added --create support for PowerPoint-authored empty presentations, model-backed saves, direct live-model rendering, render parity gates, and PowerPoint oracle parity coverage for core authoring defaults.