JPG vs PNG vs WebP vs SVG: The Complete 2026 Image Format Guide

The four formats that matter

Despite hundreds of image formats existing, 99% of the web runs on just four: JPG, PNG, WebP, and SVG. Each one solves a specific problem — and using the wrong one can bloat your page weight, blur your visuals, or break your design.

JPG (JPEG): the photo workhorse

JPG uses lossy compression that's tuned for the way human eyes perceive color. It's unbeatable for photographs and complex scenes with lots of color gradients. Avoid it for anything with sharp edges, text, or transparency.

• Best for: Photos, hero banners, social media images.
• Avoid for: Logos, screenshots with text, illustrations.

PNG: pixel-perfect with transparency

PNG is lossless and supports an alpha channel (transparency). It's ideal whenever you need crisp edges or need to layer an image over a colored background.

• Best for: Logos, icons, screenshots, UI mockups.
• Avoid for: Photos (file sizes get huge).

WebP: the modern compromise

Developed by Google, WebP supports both lossy and lossless modes plus transparency, and produces files 25–35% smaller than the equivalent JPG or PNG. Browser support is universal in 2026.

• Best for: Anything on the web where bandwidth matters.
• Avoid for: Files you'll send to non-technical recipients (some apps still don't preview WebP).

SVG: infinitely scalable

SVG isn't a pixel format at all — it's XML that describes shapes mathematically. That means it stays crisp at any zoom level and is often a fraction of the file size of a raster equivalent.

• Best for: Logos, icons, charts, illustrations.
• Avoid for: Photographs (impossible to represent realistically).

Quick decision flow

1. Is it a photo? → JPG (or WebP for the web).
2. Does it need transparency? → PNG (or WebP).
3. Is it a logo or icon you'll resize a lot? → SVG.
4. Is it for the web and you control the pipeline? → WebP.

Need to switch between formats? onlinefileconverter converts between all four instantly in your browser.