Edit Documents in Your Browser — Without Running a Server

ONLYOFFICE is normally something you install: the editors are a front end for ONLYOFFICE Docs (the Document Server), which converts and stores your files on a machine you have to run and keep running. That is the right shape for a team. It is a lot of machinery when all you wanted was to open a .docx someone sent you.

This site is the other shape. The same editors, plus the same x2t conversion engine, are compiled to WebAssembly and loaded into the page. Your browser is the document server — which is why nothing is uploaded, why there is no account, and why it keeps working after you go offline. Try the features you need while online, then use what your browser has saved offline. Opening files from links still needs a connection.

It is a modified version of the ONLYOFFICE editors, published under the same AGPL-3.0 license. It is not an official ONLYOFFICE product, and this project is not affiliated with, sponsored by or endorsed by Ascensio System SIA.

What you get

• The real editors — the ONLYOFFICE document, spreadsheet, presentation and PDF editors, not a viewer or a reimplementation.
• The real converter — x2t, the same engine ONLYOFFICE Docs uses, compiled to WebAssembly. DOCX, XLSX, PPTX, ODT, ODS, ODP, CSV and PDF in; DOCX, XLSX, PPTX, PDF, TXT, HTML and CSV out.
• Local files are opened, edited and converted on your device, without a document-processing server. The source code is public for inspection and self-hosting.
• Try the features you need while online, then use what your browser has saved offline. Opening files from links still needs a connection.
• Open source — AGPL-3.0, and it deploys as static files, so you can host your own copy on any web server.

How it differs from ONLYOFFICE Docs

Being honest about this is more useful than a feature list:

• No collaboration. Co-editing, comments-in-real-time, user presence and everything else that needs a server between two people is not here. This is a single-user editor.
• No connectors. The Nextcloud / ownCloud / SharePoint integrations belong to ONLYOFFICE Docs. This site opens files from your disk, from a URL, or from a parent page that embeds it.
• No document server to administer. Self-hosted deployments still need updates and security maintenance. With autosave enabled, you can recover your work in the same browser. Copies stay for 7 days after the last edit or open and can be managed at /history (Saved documents). Browser data can be cleared, so save important changes to a file.
• Your browser does the work. A large document costs your own memory rather than a server's. The engine asks for a few hundred megabytes when it starts, which is fine on a laptop and can be tight on an old phone.
• Everything else is the same engine, so fonts, tables, formulas, revisions and layout survive a round trip the way ONLYOFFICE handles them.

How to use it

1. Open the editor — no sign-up screen, no license key.
2. Pick a DOCX, XLSX, PPTX, ODT, CSV or PDF file from your device, or start a blank one.
3. Edit it. The document is opened, converted and rendered inside the tab.
4. Save it back to your disk, or export it as PDF, TXT, HTML or CSV.

Frequently asked questions