Pixora guide · Updated September 21, 2026
JPG vs PNG vs WebP: Which Image Format Should You Use?
Understand the practical differences between JPG, PNG and WebP for photographs, graphics, transparency and web delivery.
Open image converter →What this guide covers
This guide focuses on the practical decisions behind image editing: pixel dimensions, file formats, compression settings, browser support and the final destination of the image. The goal is to help you choose a workflow based on the actual requirement rather than simply producing the smallest possible file.
JPG
JPG is a widely supported lossy format that is commonly used for photographs. It can produce compact files at suitable quality settings, but repeated lossy encoding can reduce image quality. JPG does not support transparency.
PNG
PNG uses lossless compression and supports transparency. It is useful for screenshots, interface graphics, illustrations and other images where exact pixel preservation matters. For photographic images, PNG files can be much larger than JPG or WebP.
WebP
WebP supports lossy and lossless encoding and can include transparency. It is widely supported by modern browsers and can be efficient for web delivery. The destination should still be checked before replacing an existing format.
A practical comparison
- Photographs: compare JPG and WebP at the quality level you actually need.
- Transparency: PNG or WebP may be appropriate when the destination supports them.
- Screenshots and UI graphics: PNG can preserve sharp edges and text effectively.
- Legacy compatibility: JPG is often the safer requirement when a system explicitly asks for JPEG.
Do not choose from the format name alone
File size depends on image content, dimensions and encoding settings. A format that is efficient for one image can be inefficient for another. Convert a representative sample, compare visual quality and file size, and then use the result that satisfies the actual destination.