• Internet Business, Ezine Publishing
• XLSHTML file support
• April 19, 2026

An XLSHTML file is best understood as an Excel spreadsheet that has been saved in a web page format rather than in a normal native Excel workbook format like .xls or .xlsx. Instead of keeping the file strictly as a standard spreadsheet, Excel converts the visible sheet into HTML, which is the language used to build web pages. This means …