The short answer is no. The longer answer is that, although you may not get an official Google penalty for them, they can still impact your site’s performance in search, and can have a significant impact in certain cases. Duplicate content tends to be a huge no-no in SEO. When it comes to duplicate title tags and meta descriptions, it’s a different situation.You certainly don’t want to have multiple pages competing in search engines for the same keyword, so check your pages showing duplicate title tags and meta descriptions. If these are blog category or tag pages, you are usually better off adding a no-index tag to these pages. This ensures that Google is only crawling and indexing the pages of your website that offer value to users and are the most relevant to your site. If you have two or more blog posts that are focused on the same topic, you may want to consider combining them into one post and redirecting deleted posts to the most relevant, descriptive URL.If there are duplicate title tags and meta descriptions because they are necessary for a large directory, ecommerce, or archiving site, they would likely not have a significant impact. Another thing to consider is that, for the most part, search engines don’t pay much attention to meta descriptions. Those are mostly meant to serve your users and are an opportunity to further describe the content on the page. Oftentimes, search engines will create their own meta description using the beginning content of the page if one has not been identified or they “don’t like” the one that’s there.In a perfect world, every single page on your website would have a uniquely crafted title tag and meta description. This is simply not feasible for some websites, especially for large sites that frequently add pages and change pages. The best approach is to do what’s best for your users and what’s feasible for you and your website.