Pine Script is TradingView’s own scripting language, purpose-built for creating custom indicators and trading strategies that run directly on TradingView’s charts. It exists so traders can codify their own specific ideas - conditions or calculations that built-in indicators don’t cover exactly - and was designed to be more approachable than general-purpose programming languages, with no prior coding background assumed.
Related Reading
See why Pine Script exists and how it fits into a beginner’s TradingView journey in What Is Pine Script? A Beginner’s Introduction.