4 min read

JPG vs PNG vs WebP: Which Should You Use?

A practical comparison of the three most common image formats — when each one makes sense based on transparency, compression, and use case.

Most people default to whatever format their phone or screenshot tool saves in, without realizing the format itself affects file size, quality, and compatibility. Here's what actually distinguishes the three formats you'll run into most often.

JPG (JPEG)

JPG uses lossy compression, meaning it discards some image data to achieve small file sizes. It's the standard for photographs, where the compression artifacts are least visible against continuous color gradients. JPG does not support transparency — any transparent area gets filled with a solid background color, usually white, when converting from a format that does support it.

PNG

PNG uses lossless compression, preserving every pixel of image data exactly, which makes it larger than an equivalent JPG. PNG supports full transparency (alpha channel), making it the right choice for logos, icons, screenshots with UI elements, or any image with sharp edges and text where compression artifacts would be visible.

WebP

WebP is a newer format built specifically for the web, supporting both lossy and lossless compression modes in a single format, along with transparency. At equivalent visual quality, WebP files are typically meaningfully smaller than both JPG and PNG, which is why most modern websites use it for faster page loads. The main consideration is compatibility — WebP is now widely supported by browsers, but some older software and certain print or design workflows still expect JPG or PNG.

Quick decision guide

Photographs for web or sharing: JPG or WebP
Logos, icons, or anything needing transparency: PNG or WebP
Screenshots with text and sharp UI elements: PNG
Smallest possible file size for a website, with transparency support: WebP
Maximum compatibility with older tools or print workflows: JPG or PNG

Frequently Asked Questions

Which image format supports transparency?

PNG and WebP both support transparency. JPG does not — any transparent area is filled with a solid background color when converted to JPG.

Is WebP always better than JPG and PNG?

WebP generally produces smaller files at similar visual quality and supports transparency, making it a strong default for websites. The main reason to still use JPG or PNG is compatibility with older software or specific print and design workflows that expect those formats.

Why do screenshots look better as PNG than JPG?

Screenshots often contain sharp text and UI edges, which lossy JPG compression handles poorly compared to photographic content. PNG's lossless compression preserves those sharp edges exactly.

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How to Compress an Image Without Losing Quality

Practical guidance on compressing images for web and forms while keeping them visually sharp, including format choice and when compression starts to hurt quality.

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