Cloaking refers to the practice of presenting various content or URLs to users and search engines. Serving various results to the user-agent can lead to the fact that your site will be perceived as deceptive and removed from the Google index.
Some examples of cloaking include:
Serving a page of HTML text to search engines, while showing a page of images or Flash to users. Serving different content to search engines than to users.
If your site contains elements that are not crawled by search engines (for example, multimedia files other than Flash, JavaScript or images), you should not provide hidden content to search engines. Rather, you should consider visitors to your site who cannot elements. For example:
Provide alt text that describes images for visitors with screen readers or images turned off in their browsers. Provide the textual contents of JavaScript in a noscript tag.
Make sure that you provide the same content in both elements (for an instance, provide the same text in JavaScript as in the noscript tag). Including substantially different content in an alternative element may cause Google to take action on the site. Hidden JavaScript redirects
When Googlebot indexes a page containing JavaScript, it will index this page, but it cannot follow or index any links hidden in JavaScript itself. Using JavaScript is a completely legit network. practice. However, using JavaScript with the intention of tricking search engines is not. For example, placing text in JavaScript than in the noscript tag violates our recommendations for webmasters because it displays different content for users (who see JavaScript-based text) than for search engines (who see text based on noscript). According to these lines, he violates the Webmaster Rules for a link in JavaScript, which redirects the user to another page using the intention to show the user a different page than the search engine sees. When the redirect link is embedded in JavaScript, the search engine indexes the source page, not the link, while users fall into the redirect target. Like cloaking, this practice is deceptive, as it displays various content for users and Googlebot, and may take the visitor somewhere else than they intended to go.
Please note that linking inside JavaScript is not misleading. When examining JavaScript on your site to make sure your site adheres to our recommendations, consider the intent.
Keep in mind that since search engines usually cannot access JavaScript content, valid JavaScript links are more likely to be inaccessible to them (as well as visitors without Javascript-compatible browsers). Instead, you can store links outside of JavaScript or copy them into a noscript tag. Passage Pages
Doorway pages are usually large sets of low-quality pages, where each page is optimized for a specific keyword or phrase. In many cases, door pages are written to rank a specific phrase and then move users to one destination.
Deployed in many domains or installed within the same domain, doorway pages tend to upset users and violate our Webmaster Guidelines.
Google’s goal is to provide our users with the most valuable and relevant search results. Therefore, we are unhappy with the practice of manipulating search engines and deceiving users by directing them to sites other than those that they choose, and which provide content exclusively for the advantage of search engines. Google may take action on doorways and other sites using this fraudulent practice, including removing these sites from the Google index.
If your site has been removed from search results, check out our Webmaster Guidelines for more information. Once you change and are confident that your site no longer violates our recommendations, submit your site for review.