Versions that do not open
Word 6 and Word 95 documents are not supported. Excel 5.0 and 95 files open with their values and formatting, but without their formulas. Excel 4.0 and earlier, and .xlsb files, are not supported. Files from any of these versions protected with a password cannot be opened.
Why convert
DOCX, XLSX and PPTX, and their OpenDocument counterparts, are the formats current office apps write by default. Saving an old file in one of them means it keeps opening in the years ahead, and Scissor Office can then save it in place.
Private by design
Old files often come from archives with private records in them. Scissor Office reads them inside your browser tab with its own engines; nothing goes to our servers.
Want to see for yourself that nothing is uploaded? How it works shows how to check in your browser's Network tab.