HTML OpenDocument Swap
HTML to OpenDocument
Converting…
Choose a HTML file
.html, .htm, .xhtml
Convert
Download
HTML pivot preview
FAQ and format details
Why convert HTML to OpenDocument?
Governments, universities, and EU-adjacent workflows often mandate ODT rather than DOCX. If you drafted in a CMS or exported from a browser, HTML→ODT gets you into Writer without a round-trip through Microsoft Word, which is where formatting surprises usually appear.
How this conversion runs
Blocks become text:h, text:p, text:list, and table:table elements with OASIS namespaces. Bold, italic, strike, and sub/sup are named text styles in styles.xml. PNG/JPEG/GIF data URLs are stored under Pictures/ and referenced from draw:frame. The ZIP stores mimetype uncompressed first, which is what the ODF spec requires so Writer recognizes the file.
Keep in mind for HTML → OpenDocument
Master pages, Writer-specific frames, and tracked changes are not generated. CSS grid/flex layout dies at the HTML sanitizer. Images that are not data URLs cannot be fetched from the network, so they become alt-text placeholders. For a Word-centric office, HTML→DOCX will feel more familiar.
After you have a OpenDocument file
Open the .odt in LibreOffice Writer and apply a house template if you have one. Writer can export PDF with better print control than this site's HTML→PDF path. Google Docs and Word can import ODT; they will remap styles.
Is this the same as saving HTML from Writer?
No. Writer's HTML export and this ODT builder are different code paths. This file is a real ODT package, not an HTML file with an .odt suffix.
Can I include fonts?
Not in this converter. Writer will use its default fonts unless you embed fonts later inside LibreOffice.
This pair at a glance
- Accepts
- .html, .htm, .xhtml
- Writes
- .odt · application/vnd.oasis.opendocument.text
- Read fidelity
- exact (HTML → HTML)
- Write fidelity
- high (HTML → OpenDocument)
- Source size
- Plan for files under 7.6 MB
Runs in this browser.
Something off with this pair? Send feedback.
About HTML and OpenDocument Text
Source file
HTML
The web’s native document format: structured markup for headings, paragraphs, lists, tables, links, and media.
HTML is the pivot format for this converter. Incoming files are turned into a sanitized HTML document, and outgoing files are generated from that document. Browsers, email clients, and most rich-text editors already speak it, which is why it is the most flexible interchange point.
- Extensions
- .html, .htm, .xhtml
- MIME types
- text/html, application/xhtml+xml
- Kind
- text · utf-8
- Category
- markup
- Standard
- Open format · since 1993
- Spec
- HTML Living Standard
- Comfortable size
- Up to about 7.6 MB in this browser converter
- Read into HTML
- exact fidelity · implemented — Identity transform after sanitizing script/style that cannot round-trip into other document types.
What this format can hold
- headings
- paragraphs
- lists
- tables
- links
- images
- inline formatting
- semantic structure
Apps that consume HTML
- Chrome (Google) — opens on Windows, macOS, Linux, Android
- Firefox (Mozilla) — opens on Windows, macOS, Linux, Android
- Safari (Apple) — opens on macOS, iOS
- Edge (Microsoft) — opens on Windows, macOS
- VS Code (Microsoft) — creates on Windows, macOS, Linux
- WordPress — creates and opens on Web
Catalog notes
Destination file
OpenDocument Text
The ISO text format used by LibreOffice Writer and OpenOffice: a ZIP of XML, the open counterpart to DOCX.
ODT is part of the OpenDocument family (ODS spreadsheets, ODP presentations). Governments and open-source shops standardize on it. Internally it is content.xml plus styles, metadata, and media. Conversion through HTML maps text:h / text:p / tables onto HTML equivalents.
- Extensions
- .odt
- MIME types
- application/vnd.oasis.opendocument.text
- Kind
- zip · binary
- Category
- word processing
- Standard
- Open format · since 2005
- Comfortable size
- Up to about 24 MB in this browser converter
- Written from HTML
- high fidelity · implemented — Writes a minimal ODT package with nested lists, emphasis styles, and Pictures/ embeds for data-URL images.
What this format can hold
- headings
- paragraphs
- lists
- tables
- links
- images
- inline formatting
- styles
Usually dropped on the way out
- css positioning
- webfonts
Apps that consume OpenDocument
- LibreOffice Writer (The Document Foundation) — creates and opens on Windows, macOS, Linux
- Apache OpenOffice Writer (Apache) — creates and opens on Windows, macOS, Linux
- Google Docs (Google) — creates and opens on Web
- Microsoft Word (Microsoft) — creates and opens on Windows, macOS, Web
- Calligra Words (KDE) — creates and opens on Linux
- OnlyOffice — creates and opens on Windows, macOS, Linux, Web