Here’s an in-depth read on the important role images play in SEO from Yoast. A quick read through will help you understand how to properly use images for your website including why you need to optimize their size, add captions, file name, and format.
Whether you’re a blogger or write articles for an online magazine or newspaper, chances are you’ll find yourself asking whether your article needs an image or not. The answer is always “Yes”. Images bring an article to life and also contribute to your website’s SEO. This post explains how to fully optimize an image for SEO and provides some pointers on using images for the best user experience.
Images, when used correctly, will help readers better understand your article. The old saying “A picture is worth a thousand words” probably doesn’t apply to Google, but it’s certainly true when you need to spice up 1,000 dull words, illustrate what you mean in a chart or data flow diagram, or just make your social media posts more enticing.
Your article needs an image relevant to its subject. If you’re adding a random photo just to get a green bullet in our SEO plugin’s content analysis, then you’re doing it wrong. The image should reflect the topic of the post or have illustrative purposes within the article. Also, try to place the image near the relevant text. If you have a main image or an image that you’re trying to rank, try to keep that near the top of the page, if that’s possible without feeling forced.
Loading times are important for UX and SEO. The faster the site, the easier it is for users and search engines to visit (and index) a page. Images can have a big impact on loading times, especially when you upload a huge image to display it really small – for example, a 2500×1500 pixels image displayed at 250×150 pixels size – as the entire image still has to be loaded. So resize the image to how you want it displayed. WordPress helps by automatically providing the image in multiple sizes after uploading it. Unfortunately, that doesn’t mean the file size is optimized as well, that’s just the image display size. So think about the size in which you upload your images!
The image caption is the text that accompanies the image on the page… Why are captions important for image SEO? Because people use them when scanning an article. People tend to scan headings, images and captions as they scan a web page.
Adding structured data to your pages can help search engines display your images as rich results. While Google says structured data doesn’t help you rank better, it does help to achieve a more fleshed out listing in Image Search. There’s more, though. For instance, if you have recipes on your site and you add structured data to your images Google can also add a badge to your images showing that this image belongs to a recipe. Google Images supports structured data for the following types:
This is a quick overview of the article but you can learn more by following the link.