ODT Format Guide & Converter

OpenDocument Text is an OpenDocument Text document — the open editable counterpart to DOCX, introduced by OASIS (2005). ODT keeps text, styles, and images in an open ZIP+XML package used by LibreOffice Writer. Choose ODT for open-standard drafting; convert to DOCX or PDF when reviewers insist on Word or a fixed layout.

Full name

OpenDocument Text

Kind

document

File extension

.odt

MIME type

application/vnd.oasis.opendocument.text

Developer / standard

OASIS · 2005

Compression

none or container

Quality model

Lossless / not lossy

Container

No / single bitstream typical

Common codecs

—

Technical sources

—

Transparency

Not supported

Animation

No (still / non-animated typical use)

Typical size

Small for text-heavy docs; larger with images

Browser support

Not rendered as a document in browsers — convert to PDF for universal reading

Compatibility

Best in LibreOffice; Microsoft Word and Google Docs can import with occasional layout shifts

ODT compression: none or container. Lossless (or non-destructive packaging) keeps reconstructable data — size savings come from packing efficiency, not throwing detail away. Typical size profile: Small for text-heavy docs; larger with images. Quality note: Excellent in LibreOffice; Word import is usually good with style caveats

Quality: Excellent in LibreOffice; Word import is usually good with style caveats

Typical size: Small for text-heavy docs; larger with images

ODT does not support an alpha channel. Convert to PNG, WebP, AVIF, or SVG when you need transparent backgrounds.

ODT is a still-media or non-animated format in typical use. Use GIF, APNG, video, or animated WebP when you need motion.

Core document properties (author, title, company, revision) plus app-specific custom properties.

• LibreOffice writing
• Open-format manuscript drafts
• Public-sector document standards
• Long-term editable archives without vendor lock-in

• Tracked-change heavy Word-only legal teams without conversion
• Complex publisher layouts better suited to InDesign/PDF
• Forms that rely on Word ActiveX controls
• Emailing people who cannot open ODT

• Truly open standard
• Editable with free software
• Inspectable package structure
• Good alternative to DOCX lock-in

• Business world defaults to DOCX
• Advanced Word features may not round-trip
• Template ecosystems are thinner
• Recipients may ask you to reconvert

Best in LibreOffice; Microsoft Word and Google Docs can import with occasional layout shifts

Browsers: Not rendered as a document in browsers — convert to PDF for universal reading

• LibreOffice Writer
• OpenOffice Writer
• Microsoft Word
• Google Docs
• Format Convertly

• Desktops and laptops with office suites
• Modern desktops
• Phones and tablets with compatible apps

Open ODT in LibreOffice Writer, or import into Word/Google Docs. For a locked copy, export or convert to PDF.

Convert ODT to DOCX for Word collaborators or to PDF for final distribution in Format Convertly — processing stays in your browser.

• Pick a target format from popular conversions or the full list below.
• Your file is read into browser memory — not uploaded to a server.
• Download the result when conversion finishes.

Compare ODT with related formats to pick the right container for quality, size, and compatibility.

Decision pages that cite ODT — the next hop after a vs comparison.

Tools extend the format graph beyond one-off conversion — compression, metadata, and utilities for real workflows.

Uploading sensitive ODT files to a random converter creates a third-party copy you cannot control. Format Convertly keeps processing on-device so photos, contracts, and exports stay private.