Compiler vs. Interpreter Compilers and interpreters convert high level presenter language into machine language. The compiler reads and translates the entire program together. But the interpreter reads one line and translates. So executor program takes more time than compiler. As the compiler is a large program, it takes up more space in memory. But since it is cut in the form of interpreter program, it takes less space to save. The program converted by the compiler is completely converted to machine program. But the program converted by the interpreter is not completely converted into machine program. Improper editing and modification in the interpreter is easier than in the compiler.