JPG vs PNG vs WebP: A Practical Comparison

If you only remember three facts, make them these: JPG is the universal photo format without transparency, PNG is the transparency-friendly lossless default for graphics and screenshots, and WebP is usually the smallest modern option for web delivery while still supporting both lossy and lossless modes. The confusion starts when teams treat those sentences as religion instead of context. A massive PNG photograph will lose to a well-tuned WebP every time in a speed audit, but a tiny PNG icon can still be the right answer when you need predictable pixels in a design system. Meanwhile, JPG remains invaluable when you are emailing an asset to someone on an unknown device or piping files into software that predates WebP support. The goal of this series is to give you plain-language rules you can repeat in standups so designers, developers, and marketers stop talking past each other about formats.

Future sections in this guide will add comparison tables, export presets, and CMS-specific notes. For now, you can move between formats with the same tools publishers already rely on: start from PNG to JPG when you need a flat photo, use JPG to PNG when lossless edits beat another JPEG generation, and standardize on JPG to WebP or PNG to WebP when the destination is a browser. We will expand this stub with worked examples so you can defend format choices to designers, developers, and SEO partners without hand-waving.