Core local editing: DOCX is the Microsoft Word format, but you do not need Word to read or edit one. This editor renders DOCX with the OnlyOffice engine, so your fonts, tables, images and page layout look right — not a plain-text fallback. Everything runs locally with WebAssembly, so the file stays on your device.
Core local editing: Under the hood, the OnlyOffice document engine is compiled to WebAssembly and runs inside your browser tab. When you pick a file it is read straight from disk into memory — there is no upload step and no server round-trip — so even large or confidential documents stay on your machine. It handles both the modern .docx format and the older binary .doc, and can export your edits back to DOCX, PDF or plain TXT.
How it works
- Click Open your DOCX to launch the editor in your browser.
- Pick a .docx file from your device, or drag and drop it onto the page.
- It renders locally with the OnlyOffice engine — read it, or edit the text in place.
- Download it again as DOCX, PDF or TXT when you are done.
What you can do
- Open and read any .docx (and .doc) file with full formatting
- Edit the text, then download again as DOCX, PDF or TXT
- No Microsoft Word, no Microsoft account, no Copilot
- Core local editing: No upload — your document never leaves your device
- Cached editing resources can work offline; remote file URLs need a connection.
Frequently asked questions
Can I open a DOCX file without Microsoft Word?
Yes. It opens DOCX directly in your browser — no Word, Office or Microsoft account needed.
Is the Word formatting preserved?
Yes. It uses the OnlyOffice engine, so fonts, tables, images and layout are preserved.
Is my document uploaded anywhere?
Core opening, editing and conversion run locally in your browser without a required document upload. The built-in AI assistant is unfinished and is not a released feature. An embedding host can receive exported files and upload them according to its own policy.
Can I edit and save it, not just view?
Yes. Edit it and download again as DOCX, PDF or TXT — no account required.
Does it work with old .doc files?
Yes. It opens both the modern .docx and the older binary .doc with the same OnlyOffice engine.
Can I convert a DOCX to PDF?
Yes. Open the DOCX, then choose Download as / Save as PDF — the PDF is generated on your device.
Is there a file size limit?
No fixed limit. Everything runs in your browser, so the practical ceiling is your device's memory.