WebP vs PNG vs JPG: Which Image Format Should You Use?
Choosing the right graphic format directly impacts your website page speed, Core Web Vitals, and user engagement. Here is an engineer's breakdown of when to choose WebP, PNG, or JPG.
WebP
Google's open format supporting both lossy and lossless compression with alpha transparency. 26% smaller than PNG and 25–34% smaller than comparable JPGs.
PNG
Lossless raster format ideal for logos, screenshots, interface icons, and illustrations requiring crisp text and sharp transparent boundaries.
JPG / JPEG
Lossy compression designed for natural photographs. Opens on every computer, digital frame, and smart TV since 1992, but lacks alpha transparency.
The Rule of Thumb
- Publishing images on a website? Use WebP. It gives the best Core Web Vitals (LCP) score and saves visitor bandwidth.
- Need a transparent company logo or screenshot with text? Use PNG (or convert to WebP with lossless compression).
- Sending a photo via email or printing a physical photograph? Use JPG for 100% universal compatibility.
Compress PNG to WebP
Slash file sizes for faster site speeds while preserving transparency.
Launch PNG to WebP ConverterConvert WebP back to PNG
Open WebP images in legacy image editors or desktop software.
Launch WebP to PNG Converter