In scrabble, is it possible to replace a blank tile?

Scrabble is one of the most notorious family games of all time. It brings people together, regardless of their age or experience, which means there’ll always be some unanswered questions to tackle by professionals. One of these questions is whether one can replace a blank tile in Scrabble or not. You can substitute any tile from your current hand.
However, you have to remember that professionals consider blank tiles the most valuable piece to use to one’s advantage in this game. Individuals are free to exchange blank tiles or not exchange their currently held blank tiles.
However, there’s another question that people pop up often: Is it okay to swap the actual tile with the current on display blank tile on the board? It’s okay to do so in “casual and house rule” friendly home games, but you can’t do so if you’re playing by the standard rules.