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Drop one DOCX or two hundred. Batch conversion is not a paid feature here.
A public sector body or an organisation with an open formats policy requires ODT rather than Word.
The OOXML document is rewritten as OpenDocument, a different XML schema with a very similar underlying model. Text, styles, tables and images map across with high fidelity.
The models are similar but not identical, and the differences show up in the corners: text boxes, content controls, and complex numbering restarts. Numbered headings are the classic casualty, where the list restarts in the wrong place after conversion.
Yes, ISO/IEC 26300, which is why several governments mandate it for document interchange.
Yes, since Office 2007. The support is decent, though round-tripping repeatedly between formats accumulates small layout drift.
Drop one DOCX or two hundred. Batch conversion is not a paid feature here.
OpenDocument Text is lossless, so nothing is thrown away in the conversion.
Converted and deleted the moment it finishes. Never written to permanent storage.