It's not a well-written sentence, but it can be read as: The reason for this is - if you save a file...
New words, one handy idiom, and a 2-minute quiz — delivered to your inbox to keep your streak alive.
Jeannie1But if you have to use these words, then some commas might help.Yes, it is correct sentence. It is in the well written format.
"The reason being, is, if you save a file..." and means what is explained above.