أنشئ حسابًا أو سجّل الدخول للانضمام إلى مجتمعك المهني.
File > Save As > rename your file and then choose File Type Web Page or XML or as I use just type and rename any file by the extension .html to change such file to a webpage or to txt file and connect it to any data base management system. there are many other ways.
if you saved it by using file type web page it will be saved as a Folder Book1 and contains:
Generally, you should import the excel sheet into database(that is not much tricky if you have a bit how know with database) and when its data is in database then in web app you can use in the way whatever you want and there will be no chance to loose data ever. if need more help let me know :)
I am sorry I don't have a website and this is a specialist Information Technology function in South Africa, the Financial Accountant would not deal with it; merely provide the data which would use lookup and pivot table functions.
What I am saying, is I don't have experience in this field.
Basm Allah Alrahman Alrahim
Application or file ?
If you want to make application like Excel from scratch like the one at Office365 learn web Develop programming languge or cloud programming language or server side with client side programming langage
References
1 -10-best-programming-languages-2015-you-should-know
2 -10-of-the-coolest-cloud-programming-languages
4 - wiki books wiki Web development Choosing the right programming language
5 - which-programming-language-for-cloud-computing
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