Convert JPEG to AVIF (JPEG to AV1 Image File Format)

Convert JPEG to AVIF. This tool re-encodes one JPEG into a AV1 Image File Format of the same pixels at roughly 73% of the byte cost, without resizing, cropping, or colour-regrading. The net effect is faster pages, better Core Web Vitals scores, and lower CDN egress bills, because the same visual output travels in a much smaller container. Nothing is saved on our side.

AVIF (AV1 Image File Format) is the modern web target. It was standardised in 2018 and reaches roughly 95%% of global browsers in 2026. At equivalent visual quality it cuts byte cost against JPEG to about 73% on typical photographic content, which is why hero images on news sites, product galleries, and blog covers increasingly ship as AVIF first with a legacy fallback.

JPEG (JPEG) is the incumbent your source probably came from: camera exports, older CMS uploads, and designer PSDs still save as JPEG by default. It is supported everywhere, decodes fast, and is trivial to produce. The cost is size. Nothing in the JPEG spec was designed for 2026 bandwidth budgets, and on photographic content a typical JPEG file is measurably larger than the same pixels in AVIF.

The trade-off is encoding speed and fallback plumbing. AVIF takes more CPU to encode than JPEG, which is why we run the encoder on our side instead of in your browser. Visual quality at the default target matches JPEG on typical photographic content; screenshots and flat-colour illustrations retain their sharp edges. Shipping AVIF in production usually pairs with a standard picture element and a JPEG fallback for the last few percent of visitors.

When NOT to convert JPEG to AVIF: archival masters where every original pixel matters (keep the JPEG), email-newsletter assets where a desktop client may still refuse AVIF (ship JPEG there), and tiny icon-sized assets under 50x50 pixels where the AVIF container overhead can exceed the encoded payload. For real hero art, product photography, and blog covers, AVIF is the right 2026 default.

Every upload is held only while we re-encode it. The resulting AVIF comes back on a one-time download link and is deleted the moment you fetch it, or sooner if you never come back. No account ties the upload to you, and the Privacy page lists every byte that touches disk. Converting JPEG to AVIF on BouseMutton leaves no residue behind.