Quote from Photoshop help
“Tool presets let you save and reuse tool settings. You can load, edit, and create libraries of tool presets using the Tool Preset picker in the options bar, the Tool Presets palette, and the Preset Manager.“
HOW TO LOAD BRUSH PRESETS
First, we need to determine what constitutes a brush file and what constitutes a preset file. A preset file has an extension of .tpl. You can have any name you want but the extension is .tpl. A brush file has an extension of .abr. These files are loaded differently.
A tool preset contains settings that define the characteristics of that tool, such as size, shape and hardness of the brush. It does not have to be a brush tool; it can be any tool, for example, smudge tool or art history brush. They all have the ability to save their settings.
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