XLSX - Find what's broken in your spreadsheet. Fix it in one click.

XLSX is a browser-based Excel workbook auditor. It scans your spreadsheet for broken formulas, hidden sheets, and external links, highlights every issue it finds, and lets you fix them in one click. Everything runs locally in your browser, so the file is never uploaded to a server. Open a workbook, review the issue list, and apply one-click fixes.