PNG vs JPG vs WebP vs AVIF: Which Image Format Should You Use?
Four formats, one question everyone eventually asks: which one should I actually use? The honest answer is "it depends on what you're doing with the image" — so here's a quick, practical breakdown instead of a wall of technical specs.
Quick Comparison
| Format | Best for | File size | Transparency | Browser support |
|---|---|---|---|---|
| JPG | Photos, social media, print | Small | No | Universal (100%) |
| PNG | Logos, screenshots, graphics | Large | Yes | Universal (100%) |
| WebP | Websites, blogs, apps (Speed) | Very small | Yes | All modern browsers (~97%) |
| AVIF | Next-gen web (Max compression) | Smallest | Yes | Most modern browsers (~93%) |
JPG: The Universal Default
JPG (or JPEG) is the format nearly everything supports — cameras, printers, old software, every website form ever built. It uses "lossy" compression, meaning it throws away some image data to shrink the file, which is fine for photos but bad for text or sharp-edged graphics (you'll see blurring/artifacts). Use JPG when compatibility matters more than absolute quality or transparency.
PNG: When You Need Transparency or Sharp Detail
PNG uses "lossless" compression — no quality is thrown away — which is why logos, screenshots, and graphics with text look crisp in PNG but blurry in JPG. The tradeoff is file size: PNGs are often 3-5x larger than an equivalent JPG. PNG is also the format that supports true alpha transparency, which is essential for logos placed on colored backgrounds.
WebP: Google's Web-First Format
WebP was built specifically to make websites load faster. It typically produces files 25-35% smaller than JPG at similar visual quality, and supports transparency like PNG but at a much smaller size. Nearly all modern browsers support it now, which is why many websites serve WebP automatically instead of JPG/PNG. If you're optimizing a website or app, WebP is usually the better default over JPG or PNG today.
AVIF: The Newest, Smallest Option
AVIF is a newer format that generally compresses even smaller than WebP at comparable quality — sometimes 50% smaller than JPG. Browser support has grown quickly but isn't 100% universal yet, particularly on some older devices and email clients, so it's best used for website images (with a fallback) rather than files you're sending directly to other people.
Which Should You Pick?
- Sending a photo to someone / uploading to any random website → JPG
- Logo, screenshot, or anything needing a transparent background → PNG
- Optimizing your own website's images for speed → WebP or AVIF
- Not sure what a file is or need to switch between these → use our image converter
You can convert between any of these formats instantly with our AVIF converter, SVG converter, or compress your assets using the image compressor, all free and processed directly in your browser.
Frequently Asked Questions
For websites, generally yes — WebP produces smaller files at similar quality and supports transparency. For sending files to other people or uploading to forms that only accept older formats, JPG remains more universally compatible.
Only if you control where the image is viewed, like your own website. AVIF is not yet supported everywhere (some email clients and older devices), so it's riskier for files you're sharing directly with others.
PNG is lossless, so it preserves quality exactly, but at a much larger file size. AVIF often achieves near-lossless visual quality at a fraction of PNG's file size, making it the best quality-to-size ratio of the four.
Need to convert between formats?
Try the Free Image Converter →