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Currently, Document Intelligence does not support Microsoft Office files, including .docx, for Custom Extraction. The supported file formats are primarily PDFs and images (JPEG, PNG, BMP, TIFF, HEIF). Workaround will be converting all docx file to .pdf files using python libraries (python-docx, pdfkit) as pdfs are compatible with custom extraction. There is no indication in the available context that Microsoft Office document support will be added in the future. However, you can keep an eye on the whats-new
Kindly refer below link: custom-model
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