Convert JPG to AVIF

JPG-to-AVIF conversion delivers the most dramatic file size reduction for photographic content on the web today. Where WebP offers 25-35% savings over JPG, AVIF achieves 40-60% at equivalent visual quality. A 200KB JPG hero image compressed at quality 82 can become a 75-95KB AVIF at quality 55, with the two being nearly indistinguishable in side-by-side comparison on standard 72-96 DPI displays. This performance gap stems from AVIF's use of AV1 intra-frame coding, which applies sophisticated prediction, transform, and entropy coding tools that are a generation beyond VP8's capabilities.

The practical impact is most visible on mobile networks. A news article with 6 inline photographs totaling 1.8MB in JPG loads at 720KB in AVIF — saving over a megabyte per page view. For publications serving millions of page views daily, this translates directly to reduced CDN costs. The Washington Post and Netflix have publicly documented their AVIF adoption, reporting 30-50% bandwidth savings compared to their already-optimized JPG pipelines.

Color fidelity during conversion is excellent because AVIF supports the full sRGB gamut used by JPG, plus wider gamuts like Display P3 and BT.2020. When converting standard JPG (8-bit sRGB), AVIF preserves color accuracy within a delta-E of 0.5 — below the threshold of human perception. For photographers converting portfolio images, this means skin tones, product colors, and landscape hues remain true to the original JPG rendering.

One practical consideration is progressive loading. JPG supports progressive rendering, where a low-resolution preview appears almost instantly and sharpens as data arrives. AVIF does not natively support progressive decoding in most current browser implementations, meaning the image appears only after the full file downloads. However, AVIF's much smaller file size means the complete file often arrives faster than a progressive JPG's first quality pass, negating the perceived advantage of progressive loading on connections above 3G speeds.