https://www.fileviewpro.com/en/file-extension-sld/
File View Pro is an all-in-one file viewer software that offers a seamless solution for users who handle a wide range of file formats on a daily basis. With its advanced capabilities, FileViewPro allows users to open, view, and manage files without the need for multiple specialized programs. One of the standout features of this tool is its support for SLD files, a format frequently used in professional design and drafting software, such as SolidWorks. on SLD files distinguishes it as a indispensable tool for engineers, architects, and