Checking height of body to allow for automatic sizing

[OskarZyg]

Could we not just check how tall the body tag and then use that as our height?

[dmanexe]

Well, that depends on what your is supposed to do.

I have found it better to set the body to a min-height of 100vh, if I am generating square images with html2image.

This vh unit is 1% of total viewport height. You can read more about Relative length units here: https://developer.mozilla.org/en-US/docs/Learn/CSS/Building_blocks/Values_and_units