Open ODT files online
OpenDocument is the open ISO standard used by LibreOffice and OpenOffice. ODS spreadsheets render as browsable sheets; ODT and ODP packages remain available for safe ZIP inspection.
Drop a ODT file to open it
or click to choose — everything stays on your device
Choose file🔒 100% private — files never leave your browser
What is a ODT file?
OpenDocument is the open ISO standard used by LibreOffice and OpenOffice. ODS spreadsheets render as browsable sheets; ODT and ODP packages remain available for safe ZIP inspection. The .ODT extension identifies a OpenDocument Format file, which is served with the application/vnd.oasis.opendocument.text media type. You can open it here instantly — drop the file into the box above and it renders in your browser. Nothing is uploaded.
Besides this free online viewer, you can open OpenDocument files in desktop apps such as LibreOffice, Apache OpenOffice, Microsoft Office — but here all you need is a web browser.
Quick facts
| Format | OpenDocument — OpenDocument Format |
|---|---|
| File extensions | .odt .ods .odp |
| MIME type | application/vnd.oasis.opendocument.text |
| Developer | OASIS |
| Category | Office documents |
| Also opens in | LibreOffice, Apache OpenOffice, Microsoft Office |
How to open a ODT file online
- Click Choose file above, or drag your ODT file onto the box.
- The right viewer loads automatically and renders your file.
- Read, scroll or page through it. To open a different file, choose Open another file.
100% private — files never leave your browser.
Libraries used to render ODT in the browser
This viewer is built entirely with open-source JavaScript that runs in your browser:
Frequently asked questions
What is a .ODT file?
A .ODT file is a OpenDocument Format, identified by the application/vnd.oasis.opendocument.text media type. You can open and read it instantly in the viewer above without installing anything.
What programs open ODT files?
On the desktop, ODT files typically open in LibreOffice, Apache OpenOffice, Microsoft Office. Online, this page opens them in any modern browser — nothing to download.
Is it safe to open my ODT file here?
Yes. The file is read and rendered entirely by JavaScript inside your own browser. It is never uploaded to a server, so nothing leaves your device.
Do I need to install anything to view a ODT file?
No. There is nothing to install and no account to create. Open the page, drop your file, and it displays instantly.
Does it work on my phone or iPad?
Yes. The viewer is fully responsive and works in modern mobile and tablet browsers such as Safari and Chrome.
Is there a file size limit?
There is no hard limit, but very large files depend on your device’s memory. Big files are processed in the background so the page stays responsive.