title: How to convert from xls file to xlsx file without lost xls file style
body: <p>I'm developing a function in python that allow user to upload xls file and then convert the file to xlsx file, I'm using pyexcel,xls2xlsx and pandas libraries for converting from xls to xlsx, but after converted the xlsx file which converted from xls file lost all style and textbox,shape in xls file, I found <a href="https://www.zamzar.com/convert/xls-to-xlsx/" rel="nofollow noreferrer">this</a> website that can convert xls to xlsx file without losing styles,textbox or shape but I have to call their api which will make my function slow and also not free.I know my question is duplicated of <a href="https://stackoverflow.com/questions/46397407/how-to-convert-xls-file-to-xlsx-file-in-python">this</a> and <a href="https://stackoverflow.com/questions/65826489/converting-xls-files-to-xlsx-using-python">this</a> but their solution is the same as mine and the result also lost style of original xls file.Does anyone know another way to archive this without losing at least textbox and shape? thanks</p>