In Adobe Lightroom presets are a set of pre-settings, previously developed, which allow with a click to apply these adjustments to a photography both in RAW and JPEG format.
Presets are used both to easily replicate some photographic styles, to be applied in photographs, and to speed up their workflow, for example by applying the same preset to several photos at the same time (batch). Once the selected preset has been applied, it will always be possible, based on our needs, to make changes by moving the sliders related to the setting to be modified. Having many adjustments, each preset will look different and this will allow us to easily find the one that will give the perfect look to each of our photographs. The best presets are those developed by professional photographers because thanks to their experience they guarantee the highest possible quality.