Born in Brčko, SR Bosnia and Herzegovina, back then still within SFR Yugoslavia, Krpić played with the youth team of Orašje where he became noticed for being the top scorer in the team and scoring in the Bosnian Youth Cup final against Bosna Visoko which Orašje won by 4–1. He joined the Dinamo Zagreb youth team in 2008. In April 2009, while he was 18 years old, he signed a 10-year contract with Dinamo. He stayed with the Croatian giants for two years, playing in their youth and reserves teams. In 2010, he moved to Austria joining LASK juniors team competing in the 2010–11 Austrian Regional League Central, better known as Regionalliga, Austrian third level. In the summer of 2011, Krpić returned to Bosnia, and after a half-season with Orašje, he signed a one-year contract with Sarajevo the during winter-break, and debuted in the second half of the 2011–12 league season. A year later, Krpić left Sarajevo and moved to neighbor Serbia where he played in the second level, Serbian First League, with Metalac Gornji Milanovac. At the end of the 2012–13 season, Krpić left Metalac, and returned to Bosnia where he joined the historic side Sloboda Tuzla, then playing in the second level but clearly aiming to return to the top level. Sloboda had brought coach Miroslav Blažević whose first signings were Edin Husić and Krpić. They archived promotion that year by winning the 2013–14 First League of FBiH. He stayed with Sloboda the following seasons, also being a member of the historical squad for the season 2015–16, just two years after their promotion, when they finished second in the league and were cup finalists. Although, at the start of that season, Krpić left Sloboda and signed a 3-year contract with Croatian top-flight side Istra 1961, however, he left Istra shortly afterward, without even debuting for them in any competition, and during the following winter-break he rejoined Sloboda. Halfway through the 2016–17 season, Krpić led the scoring table in the Bosnian Premier League, subsequently attracting interest from abroad. On 3 March 2017, it was announced that Krpić had signed a three-year contract with the Swedishfirst-tier side AIK, a fee rumoured to be €150,000, upon recommendation from the club's assistant managerNebojša Novaković.. He left the club the same year and came back to Sloboda. After one season in Sloboda, Krpić left and joined the Iranian clubTractor. At the end of the season, he left Tractor, came back to Bosnia and signed a two-year contract with Željezničar. In the 2018–19 season, Krpić finished not only as Željezničar's top goalscorer but as league top goalscorer as well, scoring 16 goals in 32 league games, and 19 goals in 36 games in all competitions for Željezničar. He scored two goals in Željezničar's 5–2 home league match, Sarajevo derby win against his former club FK Sarajevo on 31 August 2019. On 30 November 2019, Krpić scored another goal against Sarajevo in the city derby, this time in Željezničar's 1–3 away league win. On 3 January 2020, he signed a contract with South Korean K League 1 club Suwon Samsung Bluewings for a €230.000 transfer fee. He made his official debut on 19 February 2020, in an AFC Champions League match against Vissel Kobe.
