Title: rel=tooltip on link (a) tags not HTML5-valid? Last modified: August 21, 2016 --- # rel=tooltip on link (a) tags not HTML5-valid? * Resolved [manuelkuhs](https://wordpress.org/support/users/manuelkuhs/) * (@manuelkuhs) * [12 years, 7 months ago](https://wordpress.org/support/topic/reltooltip-on-not-html5-valid/) * I’ve been using your (fantastic) tooltips on links like this: * `link title` * However, this doesn’t validate in HTML5 format. validator.w3.org gives: * > Bad value tooltip for attribute rel on element a: The string tooltip is not > a registered keyword or absolute URL. * Any ideas? * [http://wordpress.org/plugins/responsive-mobile-friendly-tooltip/](http://wordpress.org/plugins/responsive-mobile-friendly-tooltip/) Viewing 3 replies - 1 through 3 (of 3 total) * Plugin Author [ItayXD](https://wordpress.org/support/users/itayxd/) * (@itayxd) * [12 years, 7 months ago](https://wordpress.org/support/topic/reltooltip-on-not-html5-valid/#post-4148313) * Yes it’s true I better use the data-tooltip attribute. I’ll do it on next update. * Thread Starter [manuelkuhs](https://wordpress.org/support/users/manuelkuhs/) * (@manuelkuhs) * [12 years, 7 months ago](https://wordpress.org/support/topic/reltooltip-on-not-html5-valid/#post-4148366) * great, thanks!! * [zugvogel](https://wordpress.org/support/users/zugvogel/) * (@zugvogel) * [12 years, 7 months ago](https://wordpress.org/support/topic/reltooltip-on-not-html5-valid/#post-4148437) * would be great if you could change that? * i am having the same problem. * thanks! Viewing 3 replies - 1 through 3 (of 3 total) The topic ‘rel=tooltip on link (a) tags not HTML5-valid?’ is closed to new replies. * ![](https://s.w.org/plugins/geopattern-icon/responsive-mobile-friendly-tooltip_bbad9a. svg) * [Responsive Mobile-Friendly Tooltip](https://wordpress.org/plugins/responsive-mobile-friendly-tooltip/) * [Frequently Asked Questions](https://wordpress.org/plugins/responsive-mobile-friendly-tooltip/#faq) * [Support Threads](https://wordpress.org/support/plugin/responsive-mobile-friendly-tooltip/) * [Active Topics](https://wordpress.org/support/plugin/responsive-mobile-friendly-tooltip/active/) * [Unresolved Topics](https://wordpress.org/support/plugin/responsive-mobile-friendly-tooltip/unresolved/) * [Reviews](https://wordpress.org/support/plugin/responsive-mobile-friendly-tooltip/reviews/) ## Tags * [html5](https://wordpress.org/support/topic-tag/html5/) * [validation](https://wordpress.org/support/topic-tag/validation/) * 3 replies * 3 participants * Last reply from: [zugvogel](https://wordpress.org/support/users/zugvogel/) * Last activity: [12 years, 7 months ago](https://wordpress.org/support/topic/reltooltip-on-not-html5-valid/#post-4148437) * Status: resolved