A clear comparison of the most common image formats for web and beyond
Choosing the right image format can mean the difference between a fast, crisp website and a slow, bloated one. JPEG, PNG, and WebP each have strengths and trade-offs. This guide explains when to use each format and how to convert between them for free.
JPEG uses lossy compression, which discards some data to achieve smaller file sizes. It's ideal for photographs and images with many colors and gradients. JPEG does not support transparency—any transparent areas become a solid color (usually white).
Best for: Photos, complex graphics, real-world images. Avoid for: Logos with transparency, sharp text, line art.
PNG uses lossless compression, so image quality is preserved exactly. It supports transparency (alpha channel), making it perfect for logos, icons, and graphics that need to overlay on different backgrounds. The trade-off is larger file sizes than JPEG for photo-like content.
Best for: Logos, screenshots, graphics with transparency, images with sharp edges. Avoid for: Large photo galleries where file size matters.
WebP is a modern format developed by Google. It supports both lossy and lossless compression and transparency. At comparable quality, WebP files are typically 25–35% smaller than JPEG and up to 26% smaller than PNG. Browser support is now excellent (Chrome, Firefox, Safari, Edge).
Best for: Web images where smaller size and good quality matter. Note: Some older systems may not support WebP; keep JPEG/PNG fallbacks if needed.
Use JPEG when you need broad compatibility and your image doesn't require transparency. Use PNG when you need transparency or lossless quality. Use WebP when you want the best balance of size and quality for web—especially for photos and complex images.
You can convert images between these formats using free online tools. Convert JPEG to PNG if you need transparency (the transparent area will be white or a color you choose). Convert PNG to JPEG to reduce file size when transparency isn't needed. Convert to WebP for smaller web assets when your audience uses modern browsers.