Thanks for your comment! It will handle 100,000s of cells without much issues: it has virtualized scrolling and rendering . I have not tested it with large fi

Thanks for your comment! It will handle 100,000s of cells without much issues: it has virtualized scrolling and rendering . I have not tested it with large file sizes, like your 20mb or 50mb examples. I would love to test the product with it. Is there a way you could send us an example of such a workbook, where data is anonimized? You can send it to robbert@spreadsheetpreview.com