ODT Viewer Online — Free OpenDocument Reader | Online Gallery
Open LibreOffice & OpenOffice .odt documents instantly. Read LibreOffice and OpenOffice OpenDocument text (.odt) files client-side without software installation.
What is ODT Viewer and what does it do?
Open and inspect LibreOffice Writer and Apache OpenOffice OpenDocument text files (.odt) directly in your web browser with zero software setups.
- Read LibreOffice .odt documents with preserved headings and paragraphs.
- Switch between formatted reading mode and clean plain text.
- Export extracted text with zero cloud storage.
How does ODT Viewer work?
Unzips the ODF container in client-side memory, extracts content.xml, and traverses OpenDocument XML schema tags.
100% private: all processing happens locally in your browser using client-side WebAssembly, WebCrypto, WebAudio, and HTML5 Canvas. Your files are never uploaded to any server.
Who needs ODT Viewer?
Linux & Open-Source Users
Quickly read ODT files on any machine without installing LibreOffice.
Supported file formats
OpenDocument Text Viewer (.odt) opens and processes the following file extensions directly in your browser:
.odt.ott.fodtHow to use ODT Viewer — step by step
- 1
Select ODT Document
Drop your .odt file into the browser viewport.
- 2
Read Document
Inspect headings and paragraphs rendered accurately.
- 3
Export
Copy text to clipboard or export.
Frequently asked questions
What is an ODT file?
ODT is the OpenDocument Text format used by LibreOffice and OpenOffice.
Is it secure?
Yes, completely sandboxed within your local web session.
More free tools you might like
- PDF Viewer & Document Reader
- Markdown Renderer Studio
- Code Syntax Highlighter
- Excel & CSV Data Grid Analyzer
- Microsoft Word Viewer (.docx)
- PowerPoint Presentation Viewer (.pptx)
Browse the full collection in the Plugin Store — every tool is free, private, and runs entirely in your browser.