JanKallman / EPPlus

Create advanced Excel spreadsheets using .NET
3.76k stars 1.18k forks source link

Add support to save ExcelPackage as an .xlsb #192

Open slycoderr opened 6 years ago

slycoderr commented 6 years ago

This feature would be very useful for saving large workbooks. Saving as an xlsb reduces the file size by roughly 75%.

richardtallent commented 6 years ago

This would be a massive effort, a complete rewrite of EPPlus. Internally, EPPlus is very strongly coupled with the XML format.