Meta descriptions appear below the meta title and tell users what a page is about. They are designed to add context and encourage clicks, so you should use them to give users a reason to click on your result, rather than those of your competitors.
You can run a variety of SEO experiments on these meta tags, such as adding or removing:
Star ratings;
Incentives such as “free shipping”;
Secondary keywords.
Here’s an example of this test in action. A retailer free spain number for whatsapp added “new styles just added” to their meta descriptions and saw a significant increase in organic traffic:
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An example of this test in action
Think about what changes might help your meta descriptions resonate more with potential customers and, in turn, improve your CTRs.
3. Header Tag
Heading tags are on-page elements that help Google understand what a page is about. You should have a main H1 for each page and several H2 or H3 subheadings to break up your content.
These elements can be tested to improve the clarity of your site's content to search engine crawlers, so they can do a better job of finding results that are consistent with user queries.
Run split-test SEO experiments on your Control and Variant groups to see if any of the following changes impact your organic traffic:
Title tag position;
Length of sentences;
Using H2 or H3 for subtitles;
Inserting multiple keywords.
4. Alt text of images
Search engines rely on alt text to interpret images and find results that are relevant to users.
The good news is that you can split-test to see whether or not Googlebot changes the ranking of a page or image in Google Image search by making changes to your alt texts.
Some SEO experiments related to alt text include:
Use dashes instead of spaces;
Add or remove characters;
Change the use of keywords.