Keyword stuffing is a practice that involves deliberately saturating a web page with so many keywords or highly repetitive phrases that the text becomes conspicuously forced and often difficult for a human to read. The objective of this tactic is to illegitimately manipulate the page’s ranking position within the SERPs.
Keyword stuffing is categorized as a black hat SEO technique where a web page is intentionally loaded with an excessive (and frequently awkward) volume of keywords in an attempt to influence its ranking in the search engine results pages. This manipulation was once widely utilized by spammers and unscrupulous webmasters in an effort to cheat the search system. However, keyword stuffing is now actively penalized by all major search engines. Websites engaging in this practice risk being entirely removed from the SERPs.
There are various ways that keyword stuffing can be executed. The most common method is the simple repetition of a keyword or phrase over and over again throughout the page’s content. This can occur in the main body text, the page title, meta tags, or even the comment sections.
Another frequently used black hat method involves the deployment of hidden text, which is text rendered in the exact same color as the page’s background (making it invisible to human users but still readable by search engine crawlers).