> For the complete documentation index, see [llms.txt](https://help.quantower.com/quantower/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://help.quantower.com/quantower/analytics-panels/chart/technical-indicators/trend/zigzag.md).
# ZigZag
## Description
ZigZag is a trend-following indicator that allows to determing trend swings. A combination of ZigZag highs and lows can be used as a support or resistance level. Also, it helps to identify significant changes in price and filter out short-term fluctuations.
## Formula
ZigZag finds extremums in price movement. These extremums reflect the diviations of price that are more than setted value. By default, the value for a ZigZag is 5%, it will ensure that only price fluctuations of 5% or more will be shown in the chart.
## Most useful cases
* **Determining swings** - the most common case of ZigZag usage is eliminating small price fluctuations and paying attention to huge price swings.
* **Support/Resistant levels** - ZigZag is also very helpful in finding levels of support and resistance; to do it, traders generally analyse the price of ZigZag swing and combine the closest swings together in one price level.
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