HTML Checking for Large Sites
Rocket Validator automatically scans your sites for accessibility issues using the W3C Validator,
hosted on our own servers and integrated into our web crawler.
Still checking your large sites one page at a time?
Save time using our automated web checker. Let our crawler check your web pages on the W3C Validator.
HTML issues tagged as data attributes.
The attribute displayText is not allowed on <span> elements.
This issue is commonly caused by an old integration of ShareThis via Drupal or other CMS - the old code used invalid attributes like displayText, st_url and st_title which were later changed to HTML5 custom data attributes.
Learn more:
- [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
The attribute st_title is not allowed on <span> elements.
This issue is commonly caused by an old integration of ShareThis via Drupal or other CMS - the old code used invalid attributes like displayText, st_url and st_title which were later changed to HTML5 custom data attributes.
Learn more:
- [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
The attribute st_url is not allowed on <span> elements.
This issue is commonly caused by an old integration of ShareThis via Drupal or other CMS - the old code used invalid attributes like displayText, st_url and st_title which were later changed to HTML5 custom data attributes.
Learn more:
- [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
25,000 HTML checks per month. Is that enough for your site?
Save time using our automated web checker. Let our crawler check your web pages on the W3C Validator.