Converting JPG to AVIF shrinks the file by roughly 50% at equivalent perceived quality. AVIF is the most efficient mainstream image format available, and for content delivery it can turn a 500 KB product shot into a 250 KB file with no visible difference.
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Lossy-to-lossy transcoding adds a small quality hit, but AVIF's efficiency means you can encode at moderate quality settings and still match or exceed the JPG visually. Encoding takes noticeably longer than JPG or WebP because AVIF uses the AV1 video codec, which is computationally expensive.
AVIF works in Chrome 85+, Firefox 93+, Safari 16+, and modern Edge. macOS and iOS have native support in Finder and Photos. Image editors are catching up; most now handle AVIF but some require plugins.
JPG (JPEG) is a 1992 lossy photo format that became the default way to store photographs on the web. It uses a discrete cosine transform plus quantization, tuned so that errors fall where human vision is least sensitive. No transparency, no animation, but excellent for photos at 70–90% quality.
AVIF is an image format built on the AV1 video codec, standardized in 2019. It supports HDR, wide color gamut, 12-bit depth, alpha, and animation. At matched perceived quality it's typically 50% the size of JPG and 20% smaller than WebP. Support is near-universal in modern browsers but spottier in image editors.
AVIF produces smaller files at equivalent quality but takes longer to encode and has slightly less mature tooling. For cutting-edge delivery where file size matters most, AVIF wins. For reliable, fast encoding with broad support, WebP is still a great choice.
No. JPG stores 8-bit SDR data, so converting to AVIF can't invent HDR information that was never in the source. AVIF only carries HDR when encoding from an HDR source.
JPG (JPEG) is a 1992 lossy photo format that became the default way to store photographs on the web. It uses a discrete cosine transform plus quantization, tuned so that errors fall where human vision is least sensitive. No transparency, no animation, but excellent for photos at 70–90% quality.
AVIF is an image format built on the AV1 video codec, standardized in 2019. It supports HDR, wide color gamut, 12-bit depth, alpha, and animation. At matched perceived quality it's typically 50% the size of JPG and 20% smaller than WebP. Support is near-universal in modern browsers but spottier in image editors.
Yes. The converter runs entirely in your browser using WebAssembly. Your images are never uploaded, never sent to a server, and never leave your device.
There's no hard limit, but because everything runs in your browser you're bounded by available memory. Very large images (over a few hundred megapixels) can hit browser memory limits. Process in smaller batches if you run into issues.