WebP vs PNG vs JPG: Which Image Format to Use in 2026
Practical guide to choosing between WebP, PNG, and JPG. File size comparisons, quality differences, and when to use each.
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The short answer: use WebP for the web, JPG for photos you're sharing, and PNG only when you need transparency. Here's why.
File Size Comparison
I took the same 4000x3000 photo and saved it in all three formats:
- JPG (85% quality): 1.2 MB
- PNG: 8.4 MB
- WebP (85% quality): 0.7 MB
WebP is 42% smaller than JPG and 92% smaller than PNG. At the same visual quality. That's not a marginal difference. For a website with 20 images per page, that's the difference between a 2-second load time and a 6-second load time.
When to Use Each Format
WebP: Website images, blog posts, product photos, social media. Best all-around format. Every modern browser supports it (yes, even Safari since 2020).
JPG: Photos you're emailing, printing, or sharing with people who might not know what WebP is. It's the universal format everyone can open.
PNG: Logos, screenshots, graphics with text, anything needing transparency. Don't use PNG for photographs. Ever. A photo as PNG can be 5-10x larger than JPG with no visible quality improvement.
Converting Between Formats
Use the Image Converter to switch between formats instantly. Drop your image in, pick the target format, and download. It runs in your browser so your images stay private.
What About AVIF?
AVIF is even smaller than WebP (about 20% smaller) but browser support is still catching up. Firefox and Chrome support it, Safari added support in 2023. If you're building a website and can provide fallbacks, AVIF is worth considering. For general use, WebP is the safer choice today.