Is my file uploaded when converting DOCX to ODT?

No. The conversion runs entirely in your browser. The file never leaves your device, there is no server to upload to, and the page works offline once loaded.

Is DOCX to ODT conversion free?

Yes, with no account, no watermark and no file limit per day. frogConvert is open source and there is no server cost to recover, because your device does the work.

How large a file can I convert?

Up to 2 GB for a single file, 500 MB total per batch, and 300 files at once. The practical limit is your device's memory, since everything is processed locally.

Convert DOCX to ODT

Converts Microsoft Word's format to the OpenDocument equivalent used by LibreOffice.

Convert DOCX to ODT →

Runs on: Pandoc, compiled to WebAssembly, running in this tab
Steps: Direct, a single conversion
Input: .docx · application/vnd.openxmlformats-officedocument.wordprocessingml.document
Output: .odt · application/vnd.oasis.opendocument.text
Uploads: None. The file never leaves your device.

What to expect

The two are structurally close, so most formatting survives. Tracked changes and Word-specific field codes are the usual casualties.

Why convert DOCX without uploading

Most online converters take your file, send it to their servers, convert it there and hand back a download link. That means your document sits on someone else's disk, subject to their retention policy and their breaches. It also means you cannot use them offline, and cannot use them at all for anything confidential.

frogConvert does the conversion in the page itself, with Pandoc compiled to WebAssembly. There is no upload step because there is no server. You can disconnect from the network and it still works.

About the formats

DOCX

Microsoft Word's format since 2007, a ZIP archive of XML parts. It carries styles, tracked changes and comments, which is why converting it to anything flatter loses structure rather than just formatting. More about DOCX files.

ODT

OpenDocument Text, the ISO-standard word processor format used by LibreOffice and OpenOffice. Structurally close enough to DOCX that conversion between the two preserves most formatting. More about ODT files.

Common questions

Is my file uploaded when converting DOCX to ODT?: No. The conversion runs entirely in your browser. The file never leaves your device, there is no server to upload to, and the page works offline once loaded.
Is DOCX to ODT conversion free?: Yes, with no account, no watermark and no file limit per day. frogConvert is open source and there is no server cost to recover, because your device does the work.
How large a file can I convert?: Up to 2 GB for a single file, 500 MB total per batch, and 300 files at once. The practical limit is your device's memory, since everything is processed locally.
What is lost converting DOCX to ODT?: The two are structurally close, so most formatting survives. Tracked changes and Word-specific field codes are the usual casualties.