A nice tool, but unfortunately lacks a lot of options. Can't change font size and other settings, can't save/open files outside of the website (which doesn't make sense), can't add columns or rows without getting errors. And even though it is possible to download Excel files (and you can import Excel files) it seems impossible to export to PDF. I found some other people having similar problems when searching for "retable excel", so maybe something else isn't working. Also if you try to export a file from another program, the spreadsheet won't get created correctly, only the data gets copied over.
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