How to break 300 KB from Html(1MB) file using C#?

Question

 

Dear Madam/Sir, 

 

I have html files . size is 1 MB.

I want to know - How to break 300 KB from Html.

 

This files include - <p>,<div>, <table>,<h1> to <h6> tags 

 

Please help me. 

 

 

eg- 1MB= 1024 KB means  AFTER break 4 files will get.