Add Alt Text Tags
Adding alt tags to your images will help them appear in searches. This is especially helpful when people use screen readers (like JAWS) to read web pages. If you don't add alt text tags, your images won't appear in searches.
Images with good alt text should be as descriptive as possible. The alt attribute shows up when an image can't be displayed, so it must give the viewer enough information about what they're seeing.
Here are some examples of good and lousy alt tags:
Bad Alt Text: “My image” or “Image” or “This is an image” or “A picture.”
Good Alt Text: “A picture of my cat sleeping on my bed” or “A photograph of my uncle standing next to his car in front of our house.”
Include Keywords in Image Titles
To find out what words people are searching for, you can use Google's free image search feature. Type a word or phrase into the search box and click “Search.” You'll see a list of results with thumbnails of each image. Click on any thumbnail to view the full-size version.
If you're looking for inspiration for your next blog post or article, type “blogging” or “social media” into the search box and see what comes up. Then, scroll through the results and look for relevant images to your topic.
Use Schema Markup
If you're using an image as part of your website's navigation, you should consider adding schema markup to help search engines better understand the image. This will allow them to display the image correctly in search results.
Schema Markup is a way to add structured data to your HTML. This allows search engines to more easily understand what your page is about, increasing its visibility in search results.
You can use Schema Markup for all kinds of things — events, products, recipes, people, and more — but today, we will focus on images. There are two types of image markup: microdata and RDFa (Resource Description Framework). Both provide similar functionality, but RDFa has become the preferred method for adding structured data to images because it's easier to use and doesn't require extra code libraries like microdata does.
You can also add descriptions to your images by creating metadata tags. These tags describe the image itself, including its title, description, and other relevant details.
The metadata helps search engines understand what your images are about and will help them rank them in their image search engine results pages (SERPs).
To create descriptive metadata for your images:
In Google Images, hover over the image you want to add a description to. Click More Options > Edit Details. Add a title and description for your image. You can also add additional information like tags or copyright information. Click Save.
These are the four factors that we focused on in this article, but there may be some other factors. There isn't necessarily a right or wrong answer here: what works best for one site might not work best for another. However, you should provide descriptive titles, alt text, and captions to improve your image SEO. And to rank highly for specific keywords, you should also consider incorporating those keywords into your filenames and alt text. Lastly, make sure that you optimize your images for mobile devices, too, if you're planning on optimizing for mobile traffic.