window-fullscreen

<svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" fill="currentColor" viewBox="0 0 16 16"><path d="M3 3.5a.5.5 0 1 1-1 0 .5.5 0 0 1 1 0m1.5 0a.5.5 0 1 1-1 0 .5.5 0 0 1 1 0m1 .5a.5.5 0 1 0 0-1 .5.5 0 0 0 0 1"/><path d="M.5 1a.5.5 0 0 0-.5.5v13a.5.5 0 0 0 .5.5h15a.5.5 0 0 0 .5-.5v-13a.5.5 0 0 0-.5-.5zM1 5V2h14v3zm0 1h14v8H1z"/></svg>

<i class="ti ti-window-fullscreen"></i>

ti ti-window-fullscreen

<i class="ti ti-027301"></i>

ti ti-027301

<svg aria-hidden="true" focusable="false" xmlns="http://www.w3.org/2000/svg" width="16" height="16" fill="currentColor" viewBox="0 0 16 16"><path d="M3 3.5a.5.5 0 1 1-1 0 .5.5 0 0 1 1 0m1.5 0a.5.5 0 1 1-1 0 .5.5 0 0 1 1 0m1 .5a.5.5 0 1 0 0-1 .5.5 0 0 0 0 1"/><path d="M.5 1a.5.5 0 0 0-.5.5v13a.5.5 0 0 0 .5.5h15a.5.5 0 0 0 .5-.5v-13a.5.5 0 0 0-.5-.5zM1 5V2h14v3zm0 1h14v8H1z"/></svg>

<svg aria-hidden="true" focusable="false" xmlns="http://www.w3.org/2000/svg" width="16" height="16" fill="currentColor" viewBox="0 0 16 16"><path d="M3 3.5a.5.5 0 1 1-1 0 .5.5 0 0 1 1 0m1.5 0a.5.5 0 1 1-1 0 .5.5 0 0 1 1 0m1 .5a.5.5 0 1 0 0-1 .5.5 0 0 0 0 1"/><path d="M.5 1a.5.5 0 0 0-.5.5v13a.5.5 0 0 0 .5.5h15a.5.5 0 0 0 .5-.5v-13a.5.5 0 0 0-.5-.5zM1 5V2h14v3zm0 1h14v8H1z"/></svg>

https://cdn.jsdelivr.net/npm/@ticnob/icons@1/icons/window-fullscreen.svg