Font-Awesome/js-packages/@fortawesome/fontawesome-free/svgs/regular/window-restore.svg

<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 512 512"><!-- Font Awesome Free 5.15.2 by @fontawesome - https://fontawesome.com License - https://fontawesome.com/license/free (Icons: CC BY 4.0, Fonts: SIL OFL 1.1, Code: MIT License) --><path d="M464 0H144c-26.5 0-48 21.5-48 48v48H48c-26.5 0-48 21.5-48 48v320c0 26.5 21.5 48 48 48h320c26.5 0 48-21.5 48-48v-48h48c26.5 0 48-21.5 48-48V48c0-26.5-21.5-48-48-48zm-96 464H48V256h320v208zm96-96h-48V144c0-26.5-21.5-48-48-48H144V48h320v320z"/></svg>