JPG vs PNG vs WebP: Which Image Format Should You Use?

Picking the wrong image format is one of the most common — and costly — mistakes web developers and content creators make. Use PNG where JPG would do and your page weight explodes. Use JPG for a logo and you get ugly compression artifacts. Here's everything you need to know to choose correctly every time.

The Quick Answer

JPG (JPEG) — The Photo Standard

JPEG has been the web's photo format since 1992, and for good reason. Its lossy compression is remarkably effective at reducing photo file sizes while preserving apparent quality.

Best for:

• Photographs and complex, colourful images
• Social media images and blog post thumbnails
• Any image where slight quality loss is acceptable

Avoid for:

• Images with text, logos, or sharp edges — compression artefacts become visible
• Images you'll edit repeatedly — quality degrades with each save
• Anything requiring a transparent background

PNG — Lossless & Transparent

PNG uses lossless compression — every pixel is preserved perfectly. This makes files larger than JPG, but it's the right tool when quality or transparency matters.

Best for:

• Logos, icons, and UI graphics
• Screenshots with text
• Anything requiring a transparent background
• Images you'll edit or layer in design tools

Avoid for:

• Large photographs — PNG files will be enormous
• Situations where bandwidth and page speed matter most

WebP — The Modern Winner

Developed by Google and now supported by all major browsers — Chrome, Firefox, Safari, and Edge — WebP combines the best of both worlds: lossy compression as good as JPG, lossless compression better than PNG, and full transparency support.

Format Comparison Table

Key Takeaways