The best way to customize the meta_title and description of your website varies depending on the content management system (CMS) you use.
Our tool offers you a list of URL's that have a problem with the title and description tag. These are either duplicates, too long, too short or missing. You can easily adjust these problems within your CMS (e.g. WordPress, typo3 or shopware). For example WordPress offers a field where the title and description tag can be adjusted on each page.
Yoast Guide: https://yoast.com/meta-descriptions/