Rocket Validator automatically checks your pages on the W3C Validator.
HTML issues tagged as st_url.
st_url is not allowed on
This issue is commonly caused by an old integration of ShareThis via Drupal or other CMS - the old code used invalid attributes like
st_title which were later changed to HTML5 custom data attributes.
- [ShareThis: how to migrate legacy buttons(https://sharethis.com/support/installation/migrate-from-sharethis-legacy-buttons-to-inline-buttons/)
- Drupal: W3C validator issues on st_url
- MDN: using data attributes
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