Title: Duplicate data attribute throwing W3C validation errors
Last modified: August 21, 2016

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# Duplicate data attribute throwing W3C validation errors

 *  [rhgp](https://wordpress.org/support/users/rhgp/)
 * (@rhgp)
 * [12 years, 5 months ago](https://wordpress.org/support/topic/duplicate-data-attribute-throwing-w3c-validation-errors/)
 * So, I’ve searched and searched and searched, and I couldn’t find anything about
   this. Some of the lightbox scripts end up adding data-attributes twice to the
   anchor tag attribute ‘data-image-id’.
 * I’m not entirely sure why this is happening. I’ve disabled everything that I 
   thought may be causeing the problem, but even with a barebones gallery, I keep
   getting these validation errors.
 * Any ideas anyone? You can see the gallery at [this address](http://www.michaelcorwinmusic.com/wp/media/)
 * [http://wordpress.org/plugins/nextgen-gallery/](http://wordpress.org/plugins/nextgen-gallery/)

Viewing 1 replies (of 1 total)

 *  [intermissimi](https://wordpress.org/support/users/intermissimi/)
 * (@intermissimi)
 * [12 years, 1 month ago](https://wordpress.org/support/topic/duplicate-data-attribute-throwing-w3c-validation-errors/#post-4433035)
 * I have the same W3C validation errors in NextGEN Gallery.
    Have you found solution
   of these issues?

Viewing 1 replies (of 1 total)

The topic ‘Duplicate data attribute throwing W3C validation errors’ is closed to
new replies.

 * ![](https://ps.w.org/nextgen-gallery/assets/icon-256x256.png?rev=2083961)
 * [Photo Gallery, Sliders, Proofing and Themes - NextGEN Gallery](https://wordpress.org/plugins/nextgen-gallery/)
 * [Frequently Asked Questions](https://wordpress.org/plugins/nextgen-gallery/#faq)
 * [Support Threads](https://wordpress.org/support/plugin/nextgen-gallery/)
 * [Active Topics](https://wordpress.org/support/plugin/nextgen-gallery/active/)
 * [Unresolved Topics](https://wordpress.org/support/plugin/nextgen-gallery/unresolved/)
 * [Reviews](https://wordpress.org/support/plugin/nextgen-gallery/reviews/)

## Tags

 * [nextgen](https://wordpress.org/support/topic-tag/nextgen/)
 * [nggallery](https://wordpress.org/support/topic-tag/nggallery/)
 * [w3 validation](https://wordpress.org/support/topic-tag/w3-validation/)

 * 1 reply
 * 2 participants
 * Last reply from: [intermissimi](https://wordpress.org/support/users/intermissimi/)
 * Last activity: [12 years, 1 month ago](https://wordpress.org/support/topic/duplicate-data-attribute-throwing-w3c-validation-errors/#post-4433035)
 * Status: not resolved