To install an Adobe Systems plug‑in module, use the plug‑in installer, if provided. In Windows, you can also install or copy the module into the appropriate Plug‑ins folder in the Photoshop program folder. In Mac OS, drag a copy of the module to the appropriate Plug‑Ins folder in the Photoshop program folder. Make sure that the files are uncompressed.

To install a third-party plug‑in module, follow the installation instructions that came with the plug‑in module. If you cannot run a third-party plug‑in, it may require a legacy Photoshop serial number.