OOXML Office
Every app in one workspace, with a shared file library, tabs, search and an assistant. Installs as an app and runs offline.
Get started / Overview
Documentation
OOXML Office is a set of Office editors that run in the browser: Word, Excel, PowerPoint and Visio files, plus a team workspace.
There are three ways in. Use the apps as they are, embed one editor in your own site, or build on the library underneath them.
OOXML Office opens a file under one short bar: its name, Save, undo and redo, bold, italic and underline in Word and Excel, the slide or page in view and, where a deployment turns it on, the assistant. Show ribbon on that bar brings each app's full ribbon back at once, with your edits and undo history as they were; Simple view returns, and Settings, View, Layout keeps your choice. The editor packages you embed in your own site are not affected: they show their full ribbon unless you ask otherwise.
Assistant
Summarise this deck
Add a slide about costs
Ask anything
| I want to | Use |
|---|---|
| Write, calculate, present or draw without installing anything | OOXML Office |
| Try one app on a sample file | Word, Excel, PowerPoint, Visio or Teams demo |
| Put an editor in my own React, Vue, Angular, Svelte or Solid app | Word, Excel, PowerPoint or Visio packages |
| Decide what an embedded editor shows and allows | Embedding guide |
| Read or change Office files from code, with no UI | ooxml-core |
| Let an AI agent read and edit Office files | The MCP server |
| Run chat, calls and shared files on my own server | Team workspace |
| Open old .doc, .xls or .ppt files | Legacy formats |
| See what is not supported yet | Parity checklist and roadmap |
Word
Write and format documents with a ribbon, print layout, tracked changes and comments.
Excel
Workbooks with formulas, charts, conditional formats, sorting and filtering.
PowerPoint
View, edit and present slide decks, and work on one deck together.
Visio Beta
Open diagrams and flowcharts: pages, shapes, connectors and text.
Teams Beta
Channels, chat, presence and calls on a server you run, with Office files in the conversation.
Word editor
The <docx-editor> element. Install the package for your
framework; it brings the editor and the document model with it.
Excel editor
The <xlsx-editor> element, with the same six framework
packages.
PowerPoint viewer and editor
Rendering, editing, presenting and collaboration for React, Vue, Angular, Svelte and plain JavaScript.
Visio viewer
The <visio-viewer> element: local-first, six framework
packages.
Team workspace
The <teams-app> element, framework packages with raw hooks, and
a small reference server.
Shared UI elements
The ribbons, menus, dialogs and status bars every editor is built from, published
as
ooxml-ui, themeable through one set of tokens.
ooxml-core
Parse, edit, validate and write every Office format with no UI: documents, workbooks, decks and diagrams, charts, SmartArt, maths, encryption and collaboration.
Agents and automation
One Model Context Protocol server for every format, so an agent can read, create and change files, plus the headless operations it runs on.
Legacy formats
The sibling package reads .doc, .xls and .ppt and the compound-file container; the editors inline it, so legacy files open without an extra install.
Repository and roadmap
One monorepo holds every package and app. The roadmap lists what each app still lacks against the Office applications and in which order it is planned.
Contributing and releases
Commit conventions, the checks that run before a push, and how a change becomes a release. Every package is versioned from its commits and published with provenance.
Questions, bugs and licence
Discussions for questions and ideas, issues for bugs and requests. Everything is Apache-2.0.