Hidden Content

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Hidden content

Hidden Content
Figure: Hidden Content - Author: Seobility - License: CC BY-SA 4.0

Hidden content is all content that is hidden from website visitors but predominantly refers to text that’s hidden on a webpage and not visible on the user’s screen. Hidden content is often created by making the content the same color as the background or by setting the font size to zero, allowing search engine crawlers to view the content without it being visible on a user’s screen.

In the past, hidden content was used to add more content and keywords to your page without taking away from the usability of the page. Nowadays, search engines like Google have been known to penalize webmasters who try to trick search engines using hidden content.

Hidden content & SEO history

Although hidden content is still used today in both black hat SEO as well as white hat SEO, it was first used by SEOs in the late nineties. By hiding long lists of keywords on a page, they tried to trick search engine algorithms into ranking their pages higher. Keywords used to be one of the most important ranking factors when search engines were still in their infancy, leading SEOs and webmasters to spam large quantities of keywords onto the page in a bid to improve rankings. By hiding the keywords, they could prevent long lists of keywords from being visible on their visitor’s screen and therefore maintain what appeared to be a normal page design.

Today, strategies for using hidden content are a lot more complex. Some of these are considered black hat and are against Google’s guidelines. Others are used to improve the usability of a page, which is in accordance with their guidelines and actually encouraged by Google.[1]

Hidden Content example

An example of hidden content that’s in accordance with Google guidelines (a collapse menu where the content in each tab is hidden) as seen on getbootstrap.com

Different types of hidden content & why they are/were used for SEO

There are two main types of hidden content that are used by SEOs or have been used by them in the past. These are hidden text and hidden links.

Hidden text is a way of adding more content to a page without it being visible on the website visitor’s screen. Hidden text was previously used for adding more keywords onto a page, which used to be a good way of improving your search rankings. This is a form of keyword stuffing.

Hidden links add backlinks to pages without them being visible to website visitors and were used for improving the search performance of the pages the links pointed to.

Both of these SEO techniques are generally classed as black hat SEO, although some forms of hidden text are accepted as white hat. An example of this is alt-text, which are also not visible on the screen but can be used by screen reading software for accessibility and to add context.

Google guidelines – When hidden content is ok

Today, hidden text is still used by a large number of websites to improve the user experience. Text in dropdown menus, accordions, and other elements can reduce the amount of content visible on a user’s screen while still providing a substantial amount of information. Google still crawls this content and doesn’t penalize it since it is beneficial to the user. Alt-text is another example. It is used in SEO and it’s fully in accordance with Google guidelines.

Current day SEO implications

Hidden content that tries to manipulate the algorithm is still used by black hat SEOs in order to try and trick search engine algorithms into ranking pages higher. This type of hidden content is penalized by search engines if they discover it and is not generally a part of a white hat SEO campaign.

That being said, hidden content can be used to improve a website’s user experience. This type of hidden content, like text and content hidden inside of dropdown menus, comply with Google’s guidelines and are not penalized. Improving a webpage’s user experience can improve the way users interact with a page, which may boost a page’s performance in the SERPs.

References

  1. Hidden text and links Google Search Central. Retrieved 09 January 2021.

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