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Usage of a nofollow attribute when linking to a certain URL is normally intentional and is meant for preventing the search engine bots from following (crawling) the linked URL. Also, a link can be nofollowed to avert the flow of...

At DataForSEO, we test pages for Core Web Vitals in our own system with a simulated page load in a controlled set of conditions. In other words, we provide performance metrics based on lab data. Using lab data is generally...

In simple terms, metadata provides information about the content of a web page, such as the title and description of a blog post. However, there are many types of metadata, and not all of them can be extracted with just...

DataForSEO On-Page API is a customizable crawling engine that can fit projects and tasks of any size. If you need to scan only one page or prioritize several pages in a website crawl, we can offer you two options to...

DataForSEO On-Page API can help you to easily check SEO site speed, as all essential page load metrics are provided in the "page_timing" array in the responses of multiple endpoints. Besides that, using On-Page API, you can: Instantaneously see...

While meta keywords have no value for Google or Bing rankings, they may still matter for some search engines. We recognize that more SEOs and digital marketers concentrate their efforts on the dominating search engines. Yet, there are also experts who...

Redirect chains occur when there are at least two redirects between the initial URL and the destination URL. For example, if page A redirects to page B which redirects to page C, such a series of redirects is considered a...

Redirect is a URL forwarding to another URL. Once a website visitor or a search engine crawler gets to a page with a redirect, they will be sent to a different URL where the redirect is pointing. Generally, redirects don’t cause...

A broken image is a hyperlink to an image resource that returns a "File Not Found" error. As a rule, it’s visually represented as an icon of a ripped photo or piece of paper. Broken images damage both user experience and...