Free online tool

HTML to ODT converter

Paste your HTML and download a ready-to-open LibreOffice document — instantly, in your browser.

Nothing is sent to any server

How it works

Private, fast, free

Conversion runs entirely in your browser — no server, no account, no file size limits.

🔒 Fully private

Your HTML never leaves your browser. No network requests are made during conversion. Works offline after the page loads.

⚡ Instant conversion

Conversion runs in milliseconds using odf-kit's pure JavaScript library. No waiting for upload or server processing.

📋 What is supported

h1–h6, p, strong, em, u, s, ul, ol, li (nested), table, tr, td, th, a, blockquote, pre, code, hr, br, and inline styles.

🆓 Free, always

No character limits, no conversions per day, no sign-up required. Powered by open source odf-kit.

Need HTML → ODT in your app?

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.

View documentation npm install odf-kit

// The same code powering this tool
import { htmlToOdt } from "odf-kit";

const html = `<h1>Report</h1><p>Content here.</p>`;
const bytes = await htmlToOdt(html, {
  pageFormat: "A4",
});

// bytes → Uint8Array, save as .odt file