Check dofollow & nofollow backlinks.

Dofollow links are very important for SEO because they are a ranking factor — Google and other search engines treat a dofollow backlink as a vote for your page. How much influence it carries depends on the authority, trust, and traffic of the linking domain. Nofollow links play a different role: they don't pass ranking equity directly, but they can drive referral traffic, build topical relevance, and keep your overall backlink profile looking natural and diverse.

Backlink diversity describes the variation in your backlinks — the mix of anchor text, the ratio of dofollow to nofollow links, and where on a page they appear. SEOs watch diversity because a natural-looking profile uses many anchor-text formats: naked anchors (https://www.mywebsite.com), branded anchors (My Brand), generic anchors (click here, visit the website), and targeted/keyword anchors (red pillows, blue pillows). An over-optimized profile that's all exact-match keywords looks unnatural.

A standard link with no rel attribute is dofollow by default — for example: <a href="https://www.example.com/">link text</a>. It can also be explicit with rel="follow".

A nofollow link carries a rel="nofollow" attribute — for example: <a href="https://www.example.com/" rel="nofollow">link text</a>. The related rel="sponsored" (paid links) and rel="ugc" (user-generated content) values are also treated as non-followed.

If you guest post on external sites and expect a dofollow link in the article, it isn't always obvious whether the backlink you received is dofollow or nofollow. A dofollow link checker lets you confirm in seconds whether your link-building efforts are passing the SEO value you're paying for.

It scans the page's served HTML, which covers the vast majority of links. Links injected entirely by client-side JavaScript after load may not appear. For accuracy, point it at the article URL directly rather than a search or category page.