Compressing Images

Image compression is the process of reducing an image file's size by eliminating redundant data, either losslessly (without quality degradation) or lossily (with acceptable quality reduction). Common tools for image compression include TinyPNG, ImageOptim, Squoosh, and server-side processing via ShortPixel or Imagify.

The impact of image compression on page speed is measured using Google PageSpeed Insights and Lighthouse, which flag oversized images under their "Properly size images" and "Efficiently encode images" audits. Google Search Console's Core Web Vitals report tracks LCP improvements that result from image optimization.