What is a Title Tag?
The title of your page is perhaps one of the most important content areas of your site for SEO. As its name suggests, this tag includes the title or very brief summary of the content users can expect to find on the page. It's found in the head element of the HTML source.
A typical title tag:
<title>Your Source For Blue Widgets & Green Widgets | Acme Inc.</title>
The title is used in many places, but perhaps the two main areas of importance are the browser's title bar and the anchor text of your page's snippet on the SERP. Search engines give content in this area perhaps the highest weight of any content area on the page, so it's important that this area is optimized well.
What Does "No Keywords in Title" Mean?
None of the targeted keywords assigned to this URL were found in the title tag of the page.
Why It's Important
Neglecting to use keywords in the title tag on a page is a missed opportunity that can affect both the ranking and click-through rate of the page:
The title tag is perhaps the most important place on the page to put keywords for SEO. Search engines give the text in the title high weight, so it's a strong indicator that this page is relevant for the keywords in the title.
The title is used as the anchor text for the link to your site on the SERP, and if the keywords match the user's query they will appear in bold. This is a very positive sign that visitors will be able to find what they're looking for on the page, so it will help your click-through rate immensely.
How to Fix
You can fix this issue simply by adding your targeted keywords to the title tag. Follow the guidelines below for best practices.
Other Guidelines for Writing Effective Titles
Rewrite the title for each URL using your most important targeted keywords and keeping it under 570 pixels wide. Here are some other best practices for writing good titles:
Each title should be unique. Ideally, no two URLs should share the same title.
Place your most important keywords as early in the title as possible
Keep title length to 570 pixels wide, which is about 50-60 English characters
Keep your brand name or site name towards the end of the title
Titles should be natural and human-readable, not just comma-separated keyword lists
For large sites, consider writing rules to programmatically generate your page titles, but make sure these are human-readable and make sense