It’s a simple Google Chrome extension. First, you have to install the extension in your Google Chrome browser. Once installed, it will appear as a little checkmark icon beside your address bar. When you click on it, it will immediately start scanning all the links on a particular web page. If a link is broken or dead, it will be highlighted in red, and the error will be shown right beside the text (e.g., “404”).
But sometimes there are site-wide technical issues that get in your way of ranking on Google. Luckily, fixing technical issues is not a required step for every single piece of content you create. However, as you create more and more content you should be aware of duplicate content, broken links, or problems with crawling and indexing. These issues can set you back in search results.