Installing the Importer extension
- Visit the website download page, locate your release, and download: http://sourceforge.net/projects/geoserver/files/GeoServer/2025.1/extensions/geoserver-2025.1-importer-plugin.zip - Verify that the version number in the filename (for example 2025.1 above) corresponds to the version of GeoServer you are running. 
- Extract the archive and copy the contents into the GeoServer - WEB-INF/libdirectory.
- Restart GeoServer. 
- To verify that the extension was installed successfully, open the Web administration interface and look for an Import Data option in the Data section on the left-side menu.   - Importer extension successfully installed. 
For additional information please see the section on Using the Importer extension.