Know the Optimal Length

While crafting a meta description, it is important for you to know the permissible character limit, without which it is going to negatively impact your SEO efforts. On desktop devices the maximum meta description length is 155 to 160 characters. For mobile search results, the maximum character limit is 130 characters. The one thing you must keep in mind however is, the optimal length will sometimes vary depending on the situation or character itself, and your primary goal should be to write for visitors & not for search engine.