LinkParser is a browser add-on that analyzes the link types on the current page and marks them differently. The tool can read the following links: internal links, internal dofollow links, internal nofollow links, subdomain links, subdomain dofollow links, subdomain nofollow links, external links, external dofollow links, external nofollow links. The tool can be used for free. If desired, dofollow and nofollow instructions for search engines can also be differentiated.