The down below svg has a 1:1 viewBox.

Is there a feature to crop the SVG to the viewBox (some path are outside)?

<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 512 512">
<path fill="#fff" d="M81.1 0h362.3v512H81.1z"/>
<path fill="#d52b1e" d="M-100 0H81.1v512H-100zm543.4 0h181.1v512H443.4zM135.3 247.4l-14 4.8 65.4 57.5c5 14.8-1.7 19.1-6 26.9l71-9-1.8 71.5 14.8-.5-3.3-70.9 71.2 8.4c-4.4-9.3-8.3-14.2-4.3-29l65.4-54.5-11.4-4.1c-9.4-7.3 4-34.8 6-52.2 0 0-38.1 13.1-40.6 6.2l-9.9-18.5-34.6 38c-3.8 1-5.4-.6-6.3-3.8l16-79.7-25.4 14.3c-2.1.9-4.2 0-5.6-2.4l-24.5-49-25.2 50.9c-1.9 1.8-3.8 2-5.4.8l-24.2-13.6 14.5 79.2c-1.1 3-3.9 4-7.1 2.3l-33.3-37.8c-4.3 7-7.3 18.4-13 21-5.7 2.3-25-4.9-37.9-7.7 4.4 15.9 18.2 42.3 9.5 51z"/>
</svg>

Maybe you meant clip. However when you us a svg file into, for example, an html img tag you see only the elements within the viewport.

By the way if you put on top all your elements a rectagle that has the same size and coordinates of the viewport, select all the elements, use the command clipping (Object -> Clip -> Set) you will hide all the elements outside the viewport.