document.querySelectorAll("[type='checkbox']").forEach(c => c.checked = undefined) Adjust the selector as neccessary, sometimes I'll use `#id-of-cookie-banner

document.querySelectorAll("[type='checkbox']").forEach(c => c.checked = undefined) Adjust the selector as neccessary, sometimes I'll use `#id-of-cookie-banner [type='checkbox']` Probably useless for mobile though, unless you can punch it in the omnibar with `javascript:` prefix