1. Pine Script Overview

Fractal Chart supports Pine Script v6 — the same scripting language used on TradingView — for writing custom indicators and backtest strategies. You can paste a Pine Script v6 indicator or strategy directly into the editor and run it on your chart.

What Pine Script lets you do

• Write indicators that plot lines, histograms, markers, candles, shapes, drawings, and background colors on the chart — the same visual surface as TradingView.
• Write strategies that place and exit trades during a backtest, with a full broker simulation: position sizing, commission, slippage, pyramiding, and exit brackets.
• Fetch data from other symbols or timeframes using request.security — for example, plot the daily close on an intraday chart, or pull a correlation signal from a different instrument.
• Trigger alerts from indicator logic using alert() and alertcondition() — these fire through Fractal's normal alert channels (toast, browser notification, sound, webhook).

Pine Script v6 vs v5

Fractal supports Pine Script v6 (the current version as of TradingView's @version=6 declaration). Pine v5 scripts generally run without changes since v6 is backward-compatible for the features covered here. Pine v4 and older are not supported.

Where to write Pine

• Custom indicators — open the indicator picker, choose Custom indicators, and click New (or edit an existing one). Pine is the default language.
• Backtesting strategies — open the Strategy Tester, go to the Compose tab, and select Pine Script from the language picker.

What's in this section

• Writing Indicators — plots, inputs, drawings, alerts, and request.security.
• Writing Strategies — entries, exits, and broker configuration.
• Language Reference — what language features and built-in namespaces are supported.
• Limitations — known gaps and features not yet supported.

Next steps

Next: Writing Indicators