In HTML I can make a checkmark with ✓ . Is there a corresponding X-mark?

A corresponding cross for ✓ ✓ would be ✗ ✗ I think (Dingbats).

It's between the Z and the C on your keyboard.

I think this will help everyone.

All codes are taken from here - https://www.toptal.com/designers/htmlarrows/symbols/

✗

✗

✘

✘ 

✕

✕

✖

✖

✓

✓

✔

✔

☑

☑