Metadata
Metadata is information about a page or an image.
The information is not visible on a page, but it helps Google understand the content of your page or image.
Its important for SEO
Use Screaming Frog to bulk check
You can check all the pages metadata in one go using Screaming Frog
Best Practices
1) Write a unique description for each page;
2) Try to summarize content accurately;
3) Avoid generic descriptions;
4) Use sentence case;
5) Create something click-worthy, not clickbait;
6) Match search intent;
7) Include your target keyword where it makes sense;
8) Keep it under 160 characters
Page Metadata
RankMath guides you on how to edit the metadata of each page.
Adding image metadata
From the media library, the alt tag of each image can be added. Keep it short and descriptive.