How to Make an Image Smaller in HTML (5 Methods) You have a 4000x3000 image. You need it to display at 800x600. There are two completely different problems hiding in that sentence: Display size — how large the image appears on the page (controlled by HTML and CSS) File size — how many bytes the browser downloads (controlled by compression and export settings) Setting width="800" on an <img> tag makes the image look smaller. The browser still downloads all 4.8 MB of the original. Your page still loads slowly. Your Core Web Vitals still suffer. This guide covers both problems. Methods 1-4 handle display size. Method 5 handles file size. For a fast site, you need both. Quick Comparison Method Controls Responsive? Reduces File Size?…