Marcus didn't panic. He remembered a tool he’d seen used for server scripts: Total Excel Converter . He knew it wasn't just for a single file; it was designed for batch jobs exactly like this.

"There's no way," his colleague Sarah muttered, looking over his shoulder. "That many legacy files? The column layouts will break, and we’ll lose the formulas."

"Watch this," Marcus said, clicking the batch conversion button.

Instead of a long night of manual labor, the software processed the entire batch in under an hour. It handled everything from XLS to OpenOffice formats like ODS, turning them into perfectly formatted PDFs and modern Excel workbooks.