Word compatibility
Check supported content, playground controls, and the remaining layout gaps.
Content and authoring
| Content | Support and limits |
|---|---|
| Native editing | Create or import rich content, retain source properties, and export DOCX. Optional anchored Yjs operations cover text, formatting, images, tables, and literal find/replace. Host controls must connect these APIs. |
| Text and paragraphs | Character emphasis, highlight, superscript/subscript, spacing, paragraph pagination rules, shading, and basic borders. Built-in Normal, Title, Subtitle, and Heading 1–9 styles; imported definitions take precedence. |
| Lists, links, and breaks | Nine list levels, letter/Roman numbering, custom bullets, compound labels, and explicit starts. Hyperlink authoring and explicit line/page/column breaks. |
| Tables | Nested tables, spans, vertical merges, direct cell formatting, row continuation, and repeated header rows. Conditional table styles are incomplete. |
Pages and drawings
| Content | Support and limits |
|---|---|
| Headers and footers | Edit shared stories and section variants. Live PAGE/NUMPAGES fields work in header/footer layout. Section numbering restarts and numeral formats are not evaluated. |
| Fields | Supported simple and complex page fields are editable. General field recalculation, including contents pages and cross-references, is not implemented. Other cached results have partial rendering support. |
| Images and placement | Inline, front, and behind authoring; image and chart movement/resizing. Polygon wrapping remains incomplete. |
| Editable shapes | Seven presets with solid fills, outlines, placement, and plain text. WordDrawingView offers in-place text editing through a host callback. Imported groups, transformed shapes, and unsupported fills/wrapping remain opaque. Rich text boxes and shape effects are incomplete. |
| Notes and pagination | Footnotes/endnotes render, but note numbering and body repagination remain incomplete. Fonts, paragraph keep rules, and complex layouts can differ from Word. |
Review and playground controls
Basic inserted/deleted text wrappers are recognized. Comments, full revision review, content controls, and native equations are not supported for editing or full rendering. Retained XML does not guarantee visible content.
The Word playground connects package-backed text editing, basic formatting, and image/chart movement and resizing.
- Native and collaborative APIs need host controls.
- Rich clipboard paste, find/replace controls, and heading navigation remain gaps in the everyday browser benchmark.