HTTP 301 or Moved Permanently
This response status is usually used for permanent redirects, for example, when your website has moved to another URL. To check if you have this issue, open the page and hover your mouse over the link in your content. In the bottom-left corner, you will see its URL:
If, after clicking on the link, you are redirected to another page with a different URL
then this is a typical mistake that can lead to a decrease in positions on Google search result pages.
This error typically means that the link you wanted to access couldn't be found on the website server. So, if you click on the link in the menu or text and get a blank page or a 404 error, this may decrease your position on Google search result pages.
This happens because user behavior is one of the most important ranking factors, and seeing error 404 is one of the most frustrating things for your visitors. As a result, users leave your website immediately, increasing your website bounce rate.
To check if you have this issue, right-click on your page in the browser and choose View Page Source at the bottom of the list. In the new-opened window, you can check your <title> meta tag. It shouldn't be longer than 70 characters.
Otherwise, your title will be cut on a search result page in Google, and the "extra" words will be replaced with an ellipsis. Sometimes Google can replace your long title with a more appropriate one.
If you don't fill in the meta title for the page, it will be automatically replaced with your H1. To check if you have such an error, right-click on your page in the browser and choose View Page Source at the bottom of the list. In the new-opened window, you can see meta tags <title> and <h1>.
Otherwise, your title will be cut on a search result page in Google, and the "extra" words will be replaced with an ellipsis. Sometimes Google can replace your long title with a more appropriate one.
Say you have a catalog with multiple pages that are numbered 1st, 2nd, etc. like this:
Tag 'canonical' is used to avoid duplicate content and mark one page as a preferred one. If you have a wrong URL under this tag, it may decrease your positions on search result pages in Google. To check what page is marked as canonical, go to the second page of your catalog, right-click on your page in the browser and choose View Page Source at the bottom of the list. In the new-opened window, find the <link rel = "canonical"> meta tag.
This link should differ from the URL of the opened page.