The 22-year old has signed a three-year deal with Hibs for an undisclosed fee and is looking forward to bringing his League One goalscoring form to the Scottish Premier League.
"I'm really excited about joining Hibs and playing in the Scottish Premier League," said Collins.
"It will be a new challenge for me and I'm aiming to adapt quickly and to score goals for the team.
"Once the bid to Swindon was accepted, the manager showed me the stadium and training centre and it was a real eye-opener; I didn't realise just how big the club is.
"So it was a really easy decision for to make and now I'm just targeting a good run of games in the side and to score some goals."