Large images can significantly impact the performance of your website and emails by increasing load times and consuming more bandwidth. According to a study by Google, websites that take longer than three seconds to load can lose up to 53% of mobile users, highlighting the importance of optimizing image sizes for better user experience (Google, 2018). Additionally, larger images in emails can lead to slower download times, which may result in lower engagement rates. A report by Litmus found that 42% of email recipients delete emails that don’t display correctly, often due to slow loading images (Litmus, 2020). Therefore, it is crucial to compress and optimize images to enhance the overall performance and effectiveness of digital content.