JPG vs PNG vs WebP vs SVG — Which Image Format Should You Use?

Every format has its strength. JPG for photos, PNG for graphics, WebP for web, SVG for logos. Here's when to use each one and why.

Choosing the right image format sounds like it shouldn't matter, but it does — for file size, loading speed, and visual quality. Here's the honest breakdown of each format and when to use it.

JPG (JPEG)

The workhorse of the internet. JPG uses lossy compression, meaning it throws away some data to make files smaller. The quality loss is usually invisible to the human eye at reasonable compression levels (70–85%).

Best for: Photographs, complex images with gradients, social media posts, blog images.

Not great for: Text, logos, screenshots, anything with sharp edges. JPG compression creates artifacts around sharp color transitions.

PNG

PNG uses lossless compression — no data is lost, ever. The trade-off is larger file sizes compared to JPG. PNG also supports transparency (alpha channel), making it essential for logos and icons that need to work on any background.

Best for: Logos, icons, screenshots, graphics with text, anything requiring transparency.

Not great for: Photos (files are unnecessarily large), large images on bandwidth-sensitive pages.

WebP

Google's format that does both lossy and lossless compression better than JPG and PNG. WebP files are typically 25–35% smaller at the same quality. Browser support is now universal in 2026.

Best for: Web images (both photos and graphics), when file size matters most.

Not great for: Print workflows, email attachments (some clients still don't display inline), editing workflows where you need broad software support.

SVG

SVG is fundamentally different — it's vector-based, not pixel-based. Images are described with math (shapes, paths, colors), so they scale infinitely without losing quality. An SVG logo looks perfect at 16px and at 16000px.

Best for: Logos, icons, illustrations, charts, anything that needs to scale.

Not great for: Photos (can't represent pixel-level detail), complex images with many colors.

Quick decision guide

Uploading a photo? → JPG. Need transparency? → PNG or WebP. Building a website? → WebP with JPG fallback. Logo or icon? → SVG. Need to convert between formats? Use Toolozo's Image Converter.