Compare JPEG, WebP and AVIF Quality Side by Side

Format benchmarks you read online were measured on someone else corpus - stock photos, usually. Your logo-heavy banners, dark product shots or grainy film scans can behave completely differently. The honest way to choose a format is to encode your own images at realistic settings and look, which is exactly the workflow this page gives you: three encoders, one source, results in seconds.

The headline numbers hold up as rough guidance. WebP typically lands 25 to 34 percent below JPEG at equivalent visual quality, and AVIF undercuts WebP by a further margin, especially at low bitrates where JPEG falls apart into blocks. AVIF also degrades more gracefully: instead of blocking, it smooths, which viewers tolerate far better. Both modern formats handle transparency; JPEG never has.

The catch with AVIF is encode cost. In-browser AVIF encoding runs 5 to 10 times slower than WebP, so the AVIF pane on this page fills in last - expect a couple of seconds for a large photo. For a static site built once, that cost is irrelevant. For user-uploaded content encoded on the fly, it is a genuine engineering constraint, and many pipelines settle on WebP as the pragmatic middle ground.

When comparing, judge at the size the image will actually display, then zoom 2x into the hardest regions: sharp text over photos, fine hair, saturated red fabric, smooth sky. Formats differ most in exactly those spots. And remember that a picture element with AVIF, WebP and JPEG sources lets browsers pick the best format they support, so you rarely have to choose only one.