JPG, PNG, or WebP in 2027: Choosing the Right Image Format for the Web

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Images are often the heaviest elements on a web page, so selecting the wrong file format can noticeably slow a site down. The article recommends WebP or AVIF for photos with JPG as a fallback, PNG or lossless WebP for screenshots and logos with sharp text, and SVG for shape-based icons and illustrations. It compares JPG, PNG, WebP, AVIF, GIF, and SVG on compression, transparency, and animation support, noting that exact file savings depend on the image and encoder settings. Practical guidance includes using the picture element with multiple sources, setting image dimensions to avoid layout shift, and applying lazy loading selectively. The author also shows how Next.js can automatically convert images to AVIF and WebP and mark above-the-fold images for priority loading.

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