Render, check, print — honestly
Every sheet is rendered as a clean bordered table, one section per sheet, and saved through your browser's print dialog — pick "Save as PDF" as the destination. For wide tables switch the print dialog to landscape; the preview shows exactly what you will get before you commit.
Honest expectations: cell values and table structure convert faithfully, while heavy visual formatting — colors, conditional formats, charts — does not survive the trip. For a budget, a price list or a report table that needs to be read and not edited, that is precisely enough. And the workbook itself stays on your machine, which is exactly where financial files belong.