Type, paste, or drop HTML and generate a valid OpenDocument Text file — instantly, in your browser.
This tool needs a wider display for the side-by-side input and preview panes. Please come back on a desktop or laptop browser to use it.
The generated .odt file displays correctly in LibreOffice, OnlyOffice,
Collabora, MS Word, and other ODF applications. The preview shown here is a simplified
rendering that may not match those applications exactly.
Filenames are as requested — your browser may add (1), (2), etc. to avoid overwriting existing files in your downloads folder.
How it works
Conversion runs entirely in your browser — no server, no account, no file size limits.
Your HTML never leaves your browser. No network requests are made during conversion. Works offline after the page loads.
Conversion runs in milliseconds using odf-kit's pure JavaScript library. No waiting for upload or server processing.
Headings h1–h6, paragraphs with text alignment, bold, italic, underline,
strikethrough, subscript, superscript, inline code, highlight
(<mark>), links, bullet and numbered lists with nesting, tables
with header cells and cell background colors, blockquotes, code blocks, horizontal
rules, line breaks, images (with width/height/alt), and figures with captions. Inline
CSS for color, font-size, font-family, font-weight, font-style, and text-decoration.
No character limits, no conversions per day, no sign-up required. Powered by open source odf-kit.
Output passes the OASIS ODF validator without errors or warnings — enforced on every commit by CI. Round-trips cleanly through LibreOffice, OnlyOffice, Collabora, and MS Word.
odf-kit is a free, open source JavaScript library.
htmlToOdt()
converts any HTML string to a valid
.odt
file in Node.js or the browser. No server, no LibreOffice.