High qulity pdf create

Pdf genarated but pdf qulity missing. how to improve text qulity.

string result = Convert.ToBase64String(byteArray);

byte[] decBytes1 = Convert.FromBase64String(result);

context.Response.Buffer = true;

context.Response.Charset = "";

context.Response.Cache.SetCacheability(HttpCacheability.NoCache);

if (fileName.Substring(fileName.IndexOf('.') + 1).ToLower() == "pdf")

{

context.Response.Buffer = true;

context.Response.Charset = "";

context.Response.Cache.SetCacheability(HttpCacheability.NoCache);

context.Response.ContentType = "application/pdf";

context.Response.BinaryWrite(decBytes1);

context.Response.Flush();

context.Response.End();

}