JPG to AVIF converter with local WASM encoding

JPG to AVIF conversion re-encodes a JPEG photo into the AV1-based AVIF format, which often produces a smaller file at a comparable visual quality for the web. Priconvert does not rely on canvas.toBlob("image/avif") alone — that API silently falls back to PNG in many browsers. Instead, encoding uses @jsquash/avif WASM loaded on demand and cached for the session.

Use this when you want modern delivery sizes for sites that already serve AVIF (with JPG fallbacks), or when you simply want a more efficient archive copy. JPG has no transparency, so the AVIF output is opaque as well.

Input: .jpg / .jpeg. Output: .avif with adjustable quality. Resize and Pro batch/ZIP use the same shared conversion pipeline as other Priconvert tools.

AVIF advantages: typically better compression efficiency than JPG or WEBP at similar quality, and wide decode support in current browsers. Disadvantages: encoding is CPU-heavier than JPG; the first conversion in a session may wait while the WASM encoder loads; older apps may not open AVIF.

If the AVIF encoder cannot initialize (network blocked, unsupported environment), Priconvert disables AVIF output with a clear message instead of producing a mislabeled PNG.