Suggestion: filter out UTF8 icons like 😁 from auto-generated ID's to better pass accessibility checks.

[oldrup]

SimpleTOC encodes "special characters" in the header, for instance 😉, when creating an ID for that header, as expected.

That triggers a false "broken link" accessibility check error. Reported here:
equalizedigital/accessibility-checker#483

Screenshot:

SimpleTOC is not to blame, weird characters need to be encoded in URL's for sure, but have you considered filtering them out entirely. A manual inserted ID without encoded smileys satisfies the accessibility check.

Nothing critically that cannot be worked around, but maybe a potential improvement.
Bjarne