Office Website
This local-first web office edits Word, Excel, and PowerPoint files in the browser using WebAssembly.
About Office Website
Office Website is a local-first web application for viewing and editing Word, Excel, and PowerPoint documents in the browser. It supports .docx, .xlsx, and .pptx files and uses WebAssembly for document processing, with IndexedDB for local file management. The project is open source under AGPL v3 and built with Next.js 15+.
Hosted access is available globally at office.ziziyi.com on Cloudflare Pages and via an Asia-Pacific optimized instance at o.ziziyi.com on EdgeOne. The homepage describes local browser processing for files, while cloud file selection through Uppy can connect to Google Drive, Dropbox, and OneDrive, which are external services. Self-hosting requires Node.js 22+ and pnpm.
Key features
- Opens and edits .docx, .xlsx, and .pptx files in the browser
- Processes documents locally in the browser using WebAssembly
- Uses IndexedDB for local file management
- Supports cloud file selection via Uppy for Google Drive, Dropbox, and OneDrive
- Provides document conversion powered by OnlyOffice x2t WASM
- Offers global and Asia-Pacific optimized hosted access instances
Best for: Individuals or teams who want to view and edit Word, Excel, and PowerPoint files in a browser with local processing and optional external cloud file selection.
Good for
- Open source under the GNU Affero General Public License v3
- Local-first design states files are processed in the browser
- Supports .docx, .xlsx, and .pptx formats
Watch out for
- Cloud file selection relies on external services such as Google Drive, Dropbox, and OneDrive
- Self-hosting requires Node.js 22+ and pnpm
Office Website at a glance
- Category
- Software & Utilities › Text Editors
- Type
- Open-source project
- Pricing
- Not confirmed. Check the site
- Open source
- Yes · Source code
- Language
- English
- Last checked
- Oct 6, 2026 · Online when checked
- Listed
- Oct 5, 2026
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Office Website FAQ
Does it upload my documents?
The project is local-first and states files are processed in the browser; cloud file selection via Uppy for Google Drive, Dropbox, and OneDrive relies on those external services.
Which file types can it edit?
It supports .docx, .xlsx, and .pptx files.
What hosted access options are available?
Global access is at office.ziziyi.com on Cloudflare Pages; an Asia-Pacific optimized option is at o.ziziyi.com on EdgeOne.
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