JPG/JPEG to AVIF — Online Image Converter
Convert JPG/JPEG to AVIF online. Private, client-side — no uploadrequired. Fast batch converter.
About JPG/JPEG to AVIF
JPG encodes photos with an older lossy codec and no alpha channel, so detail caps at what the source stored. AVIF re-encodes the picture with the AV1 codec, reaching similar detail at much smaller sizes. There is no alpha to preserve, so flatten the source onto a background first. Older viewers may not open the result, so keep a JPG copy for sharing. Encoding takes longer than JPG, and stills carry no frames, so animation settings do not apply to this pair.
Why convert JPG/JPEG to AVIF?
- Flexible size with AVIF lossy or lossless compression - lossy for smaller files, lossless for exact quality.
- Keep animation and transparency where supported.
- Private, no upload - runs in your browser.
JPG/JPEG vs AVIF
| Animation | No | Yes |
|---|---|---|
| Transparency | No | Yes |
| Compression | lossy | lossy or lossless |
| Typical use | JPG is the same JPEG codec under the three-letter extension from DOS-era naming. | AVIF encodes stills and sequences with the AV1 codec for compact files. |
When not to convert JPG/JPEG to AVIF
- Skip AVIF for archival masters: lossy compression discards detail, so keep the JPG/JPEG original.
- No motion to preserve: JPG/JPEG is a still, so pick AVIF for size or compatibility rather than animation.
Limits
Starting point: JPG/JPEG - Small lossy photos for web pages and sharing. No transparency support, so alpha channels are dropped. Older viewers may not open it; keep a JPEG or PNG copy for sharing. Set the quality slider near 80-90 for AVIF photos from JPG/JPEG, and keep dimensions matched to the source.
How conversion works
Conversion runs entirely in your browser with the WASM image engine. Files never leave your device.