Hi,

An alternative approach would be to use http://michalsnik.github.io/aos/ library. It does not set the visibility: hidden or hide the content, but uses the concept of as the element is within the viewport it will apply the animation. Make sure to test AOS library though because it does set the opacity to 0 so feel free to test in a development environment and fetch as google using Webmaster Tools.

If you don't want to use the AOSjs library you can write your own Javascript (JS) library to detect if the element is within the viewport and add the CSS class from the https://daneden.github.io/animate.css/ library as needed.

I did a little more research on the issue queue for Wowjs and found that it is indeed impacting site's SEO. See https://github.com/matthieua/WOW/issues/196 here.

Wowjs sets the element to be visibility: hidden inline and the crawler cannot see the element as evident from using Fetch as Google from Webmaster Tools. We will have to find an alternative to Wowjs so that the solution we come up with does not set the visibility: hidden property but still applies the animation.

Hi,

We are wanting to implement Animate.css and Wowjs on our site and were concerned about the SEO impacts. Basically when the page is loaded, if the element is not within the viewport then the HTML tag (i.e. div tag) have a style="visibility: hidden" and once the element is within the viewport it will change to have style="visibility: visible".

Would having the style="visibility: hidden" negatively impact SEO?