The Comprehensive Guide to Image Formats and Conversion
Digital images are everywhere, but they aren't all created equal. The container—or image format—you choose for your photos and graphics dictates how they are stored, how much space they take up, and how they appear on different devices.
Understanding JPEG, PNG, and WebP
While there are dozens of image extensions, three formats currently dominate the web. Understanding their strengths and weaknesses is the first step toward better optimization.
- JPEG: Best for photographs and complex scenes. Small file size, but lossy.
- PNG: Supports millions of colors and alpha-channel transparency. Best for logos and icons.
- WebP: The modern standard. Smaller than JPEG and PNG while maintaining quality and supporting transparency.