Convert HTML to OpenDocument Text Online Free

Drag & drop your .html file here, or click to browse

Converts to OpenDocument Text on secure servers · first daily conversion free · no signup

Your first conversion each day is free. A $2.99 one-time Day Pass unlocks 24 hours and ends by itself.

Convert HTML files to editable OpenDocument Text (ODT) files, preserving text structure, tables, lists, and basic formatting. Powered by LibreOffice, the native editor for the ODF standard.

By ChangeThisFile Team · Last updated: March 2026

Quick Answer

ChangeThisFile converts your HTML file to OpenDocument Text (ODT) using LibreOffice on our secure servers. The conversion maps HTML headings, paragraphs, tables, lists, and styling to their ODF equivalents, producing a fully editable ODT file compatible with LibreOffice Writer, Google Docs, and other ODF-supporting applications. Encrypted upload with automatic file deletion, completely free with no signup required.

First daily conversion free No signup required Encrypted transfer · Async jobs kept up to 24h Queued when needed Updated May 2026

HTML vs OpenDocument Text: Format Comparison

Key differences between the two formats

Feature	HTML	OpenDocument Text (ODT)
File format	Plain text markup (.html)	ZIP-compressed XML (ODF standard)
Standard	W3C HTML specification	ISO/IEC 26300 (OASIS Open Document Format)
Primary use	Web pages and web applications	Documents, reports, letters
Editing	Text editor or IDE	LibreOffice Writer, Google Docs, Calligra Words
Layout model	CSS-based flow layout	Page-based layout with frames and sections
Tables	HTML <table> elements	Native ODF tables with cell merging and styling
Vendor lock-in	Open web standard	Open ISO standard (no vendor lock-in)
Government adoption	Web standard (browsers)	Mandated by EU, UK, Brazil, India for government documents

When to Convert

Common scenarios where this conversion is useful

Editing web content in LibreOffice Writer

Convert HTML articles, documentation, or reports to ODT so you can edit them in LibreOffice Writer with full word processing features including spell check, styles, and table of contents generation.

Meeting government document format requirements

Many governments mandate ODF for official documents. Convert HTML content to ODT to comply with open format requirements in the EU, UK, and other jurisdictions.

Importing web content into open-source document workflows

Convert HTML output from CMS platforms, wikis, or web applications into ODT for organizations that use LibreOffice and open-source document management systems.

Creating vendor-neutral editable documents

ODT is an ISO standard supported by multiple applications. Converting HTML to ODT avoids locking content into a proprietary format while maintaining full editability.

Who Uses This Conversion

Tailored guidance for different workflows

Office Workers

Convert HTML documents to OpenDocument Text for sharing with colleagues who use different software
Transform HTML reports to OpenDocument Text for archiving or distribution to external stakeholders

Review the converted OpenDocument Text for formatting changes, especially tables, headers, and page breaks

Convert to OpenDocument Text as the final step after all edits are complete to avoid formatting drift

Students

Convert HTML lecture notes to OpenDocument Text for submitting assignments in the required format
Transform HTML study materials to OpenDocument Text for reading on tablets or e-readers

Double-check that fonts and special characters render correctly in the converted OpenDocument Text file

Save a backup of your HTML original before converting, in case you need to make edits later

Professionals

Convert HTML contracts or proposals to OpenDocument Text for secure, read-only distribution to clients
Transform HTML templates to OpenDocument Text for use across different office suites and platforms

Verify that hyperlinks and cross-references still work after converting HTML to OpenDocument Text

For legally sensitive documents, confirm the OpenDocument Text output matches the HTML layout exactly

How to Convert HTML to OpenDocument Text

1

Upload your HTML file

Drag and drop your .html file onto the converter, or click to browse. Files up to 50 MB are supported for free.
2

Server-side conversion via LibreOffice

Your file is securely uploaded and processed on our servers using LibreOffice headless, which parses the HTML markup and converts it to OpenDocument Text (ODT) format. This typically takes 30-90 seconds.
3

Download the result

Once conversion is complete, click Download to save your .odt file. The uploaded file is automatically deleted from our servers.

Automate this conversion

Convert HTML to OpenDocument Text via API

Integrate this conversion into your pipeline with 3 lines of code. Free tier: 25 conversions/month.

curl -X POST https://changethisfile.com/v1/convert \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -F "file=@input.html" \
  -F "target=odt" \
  -o output.odt --fail

const form = new FormData();
form.append('file', fileInput.files[0]);
form.append('target', 'odt');

const res = await fetch('https://changethisfile.com/v1/convert', {
  method: 'POST',
  headers: { 'Authorization': 'Bearer YOUR_API_KEY' },
  body: form
});
const blob = await res.blob(); // your converted OpenDocument Text file

Replace YOUR_API_KEY with your free key — no credit card needed.

Get a free API key

Frequently Asked Questions

Is the HTML to ODT conversion free?

Yes, completely free. Convert HTML to OpenDocument Text with no cost, no signup, and no watermarks.

Will HTML formatting be preserved?

Yes. HTML headings (h1-h6) are mapped to ODF heading styles, paragraphs to text body, bold and italic to character formatting, and tables to native ODF tables. Inline CSS for font properties and alignment is also preserved.

What applications can open ODT files?

ODT is an open standard supported by LibreOffice Writer, Apache OpenOffice, Google Docs, Microsoft Word (2007+), Calligra Words, and many other word processors.

Will images be included in the ODT?

Images embedded as base64 data URIs or referenced with absolute URLs to publicly accessible servers will be included. Relative image paths pointing to local files will not be resolved.

Can I edit the resulting ODT file?

Yes, the output is a fully editable ODT file. You can open and modify it in LibreOffice Writer, Google Docs, or any other application that supports the OpenDocument Format.

Is my file kept on your servers?

No. Files are automatically deleted immediately after conversion. Nothing is stored or retained.

Is the transfer secure?

Yes. Files are transferred over encrypted HTTPS connections. Your data is protected in transit.

What technology powers this conversion?

The conversion uses LibreOffice headless on our servers. Since LibreOffice's native format is ODF, the HTML-to-ODT conversion path is particularly well-supported, producing high-fidelity output.

Will hyperlinks be preserved?

Yes. HTML anchor tags (<a href>) are converted to clickable hyperlinks in the ODT output.

Why choose ODT over DOCX?

ODT is an ISO-standardized open format with no vendor lock-in. It's required by many government agencies and preferred in open-source environments. DOCX is better for organizations standardized on Microsoft Office.

Will HTML lists become formatted lists in ODT?

Yes. Ordered lists (<ol>) and unordered lists (<ul>) are converted to numbered and bulleted lists in the ODT file with proper indentation.

What is the maximum file size?

Files up to 50 MB are supported for free conversion.

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