You can use GTmetrix to analyze the load time of your website, and use the results to determine how to speed it up.

Go to the GTmetrix site.

Enter your domain where it says "Enter URL to Analyze"

Click Analyze.

Review the Performance Scores section to view overall scores for your site's performance.

Review the Page Details section some specifics about load time, page size, and the number of requests.

Review the PageSpeed tab and make note of any recommendations to leverage browser caching, defer parsing of JavaScript, minify JavaScript or CSS, and optimize images.

Review the YSlow tab and look for suggestions to add expires headers, or make fewer HTTP requests on your site.

Next steps: The results may conclude you can improve the speed of your site by optimizing your images.