This article was originally published on Sept. 5, 2013, and was updated on Oct. 18, 2019. 

Fresh, unique images are essential for engaging with users online as you battle for their attention against the vast quantity of other online content. Written content is essential for conveying information, but images are often easier for people to digest and remember. Studies show that people remember 80% of what they see and only 20% of what they read. When you optimize images for the web, you will be able to better connect with these users, build your brand, and move potential customers down your sales funnel.

Guide to image optimization

You’ll find everything you need to know about optimizing images for the web — including how to optimize images for SEO — in this guide:

Why images matter. What is image optimization? 7 steps to optimize images for the web. 1. Choose the right images. 2. Carefully consider the text associated with your images. 3. Adjust image size and format. 4. Consider lazy loading. 5. Enable browser caching. 6. Don’t forget image metadata. 7. Create an image sitemap. Conclusion and next steps.

Let’s get started!

Why images matter

Image optimization starts with