SEOpti enables you compare your two websites URLs and extracts the URL's similarity ratio to Google Sheets™.  Alongside with similarity ratio, the add-on brings number of keywords and current traffic value of data if they are available on your sheets. That's why the best way of benefitting from this add-on is to fetch your website data from Google Search Console™. Also, your sheets' name should be same with your websites name! When your data is ready, all you need to do is entering your sheet names to input box after executing the add-on. At that stage, add-on will start to scan your sheets and extract the similarity ratios!