What happens when you convert ODT to HTML
- The ODT is opened by LibreOffice, the open-source office suite, on our conversion server and saved as a single HTML page.
- Headings, paragraphs, lists, tables, links, bold and italic are kept. Images are embedded in the page as data, so the HTML is one self-contained file that opens in any browser.
- Page layout, headers, footers and page numbers are left out, because a web page has no pages.
- This conversion runs on our server: the file is uploaded, converted, and deleted together with the result as soon as the result has been sent back to you. Nothing is kept. Files up to 25 MB are accepted.
How to convert ODT to HTML online
- Press "Choose ODT files" and select one or more files, or drag them onto the box. Files up to 25 MB each can be converted.
- There are no settings to choose: the converter keeps everything the target format can hold.
- Press "Convert to HTML". The file is uploaded to our conversion server, converted in a few seconds, and deleted together with the result as soon as the result is sent back.
- Save each HTML with its download button. Our server has already deleted both your ODT and the HTML by then.
Why convert ODT to HTML?
ODT files usually come from LibreOffice users and public-sector documents. People convert them to HTML because HTML opens in any browser and keeps headings, lists, tables and links.
In short, ODT is good at what it was made for, and HTML is the more practical choice when the file has to open, upload or print somewhere else. ODT opens in LibreOffice Writer, Google Docs and Word, while HTML opens in every web browser.
How to convert ODT to HTML on Windows, Mac, iPhone and Android
On Windows
Open this page in Chrome, Edge or Firefox, drag your ODT files in from File Explorer, and press Convert. Each HTML is saved to your Downloads folder.
On a Mac
Safari, Chrome and Firefox all work. Drag the ODT files from Finder onto the drop zone and the HTML files land in Downloads.
On iPhone and iPad
Open the page in Safari and tap Choose ODT files. You can pick from Photos or from the Files app. The converted HTML appears in Files, in the Downloads folder.
On Android
Open the page in Chrome, tap Choose ODT files and pick them from Files or your gallery. The HTML is saved to the Download folder, where any file manager can find it.
Best settings for ODT to HTML
There are no settings: the HTML is one file with its images inside it, so it can be emailed or uploaded as it is.
To paste the content into a website editor, open the HTML in a browser and copy from there; the formatting comes along without Word's hidden styling.
ODT vs HTML: the differences
| ODT | HTML | |
|---|---|---|
| Full name | OpenDocument text | HyperText Markup Language |
| Type | word-processing document | document |
| Created by | OASIS | Tim Berners-Lee |
| First released | 2005 | 1993 |
| Compression | Lossless | Lossless |
| What it holds | formatted text, images, tables and styles in a ZIP of XML files | text with tags for headings, lists, links, tables and images |
| In a browser | opens in LibreOffice Writer, Google Docs and Word | opens in every web browser |
| Common uses | LibreOffice users and public-sector documents | web pages, emails and documents meant to be read in a browser |
| MIME type | application/vnd.oasis.opendocument.text | text/html |
About ODT and HTML files
What is an ODT file?
ODT is the open standard word-processing format and the default in LibreOffice Writer. Several governments require it for documents they publish.
What is an HTML file?
HTML is the language of web pages. A converted document saved as HTML keeps its headings, lists, tables and links and opens in any browser.
ODT to HTML not working? Common problems
- "Files up to 25 MB can be converted." Server conversions have a size limit. Compress the images inside the file, or split it, and try again.
- "The conversion took too long and was stopped." Very long or complex files can pass the 90 second limit. Split the file and convert the parts.
- The file will not convert. It may be password protected, damaged, or saved in a newer or unusual version of the format.
Convert ODT to HTML from the command line
LibreOffice does the same on your own computer, without opening a window:
soffice --headless --convert-to html input.odtConverting on your own computer keeps the file entirely local, which is worth it for very large or very sensitive documents. For everything else, the converter on this page does it without installing anything.
ODT to HTML converter FAQ
Will I lose quality converting ODT to HTML?
The text, its structure and its images are kept. Page layout is not, because a web page reflows to fit the window.
Why is the HTML a different size from the ODT?
The images are embedded as text-encoded data, which makes them about a third larger, so an HTML with pictures can be larger than the ODT. A text-only document gives a small page.
Are my ODT files uploaded?
Yes, for this conversion. A faithful ODT to HTML conversion needs LibreOffice, the open-source office suite, which cannot run in a browser. The file travels over an encrypted connection, is converted in a private temporary folder, and is deleted together with the HTML as soon as the result has been sent back to you. We do not keep, read or share it.
Can I convert several ODT files to HTML at once?
Yes. Select or drop as many files as you like; they are converted one after another and each gets its own download button.
How do I open an HTML file?
HTML opens in every web browser. HTML is common for web pages, emails and documents meant to be read in a browser.
Is this ODT to HTML converter free?
Yes. There is no sign-up and no watermark. Because this conversion uses our server, there is a fair-use limit of 25 MB per file and a number of files per hour, which stops the service being overloaded.
Can I convert ODT to HTML on my phone?
Yes. It works in Safari on iPhone and iPad and in Chrome on Android. The conversion happens on our server, so it is as fast on a phone as on a computer; the HTML is saved to your Downloads folder.