A toxic backlink is a link from an external site to your own that is harmful to your SEO efforts. Toxic backlinks can come from a variety of sources, including low-quality websites, spammy directories, or even other sites that are trying to harm your ranking.
There are a few ways to identify toxic backlinks. The first is to check your website's link profile using a tool like Moz's Open Site Explorer or Ahrefs. This will show you all of the links pointing to your site, as well as the quality of those links.
Another way to identify toxic backlinks is to manually check each link. This can be time-consuming, but it's the best way to be sure that a link is actually harmful. To do this, look for signs that the site is low-quality, such as:
If you find any toxic backlinks pointing to your site, you can disavow them using Google's disavow tool. This will tell Google to ignore those links when determining your site's ranking.