"Savvy Repair for Microsoft Office" software provides four methods to recover or repair corrupted Word DOCX, Excel XLSX, and PowerPoint PPTX files. The recovery process begins by repairing the zip structure of the files.

The first three methods then try to repair all the XML sub-files. The repair process involves identifying the first XML error, truncating the file at that point, and then adding the necessary tags to the end of the shortened file using xmllint. The first method uses strict XML validation, the second uses lax validation, and the third adds missing sub-files from a blank file with the appropriate extension.
The final method in Savvy Repair is a text and data extraction process that utilizes SilverCoder's DocxToText. Unfortunately, this method doesn't recover any formatting.
Overall, Savvy Repair for Microsoft Office is an efficient and comprehensive tool that offers multiple methods for repairing corrupt DOCX, XLSX, and PPTX files, making it an essential software for anyone who frequently works with Microsoft Office documents.
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