Convert JPG to AVIF online

To convert JPG to AVIF, upload the JPG file, start the conversion and download the result: Converter.now writes an AVIF at quality 90. Both formats are lossy, so this adds a second round of compression; convert from the best original you have rather than an earlier export.

◈ Encrypted transfer◷ Short retention⊘ No watermark◎ Works on every device

JPG to AVIF at a glance

Converts: JPEG image → AV1 Image File
Output: An AVIF at quality 90
Compression: JPG: lossy → AVIF: lossy
Engine: Pillow (with ImageMagick fallback)
Privacy: Private download link; files are deleted after 6 hours. No account needed.

JPG to AVIF: The pixel decoding and image re-encoding route explained

Converter.now decodes lossy JPEG-compressed pixels optimized for photographs and broad compatibility into a working pixel canvas, then writes that canvas according to AVIF's color and compression model. Dimensions may stay constant while encoding, metadata, and fine detail change. JPEG decoding applies orientation and color interpretation to already quantized image blocks; each later lossy write starts from those decoded pixels rather than the camera original. AVIF delivery encodes AV1-derived image items with modern color and alpha capabilities while requiring deliberate speed, quality, and decoder-compatibility decisions.

Decoded canvas - Lossy JPEG-compressed pixels optimized for photographs and broad compatibility. Written image - A high-efficiency AV1-derived still image with HDR and alpha capabilities.

Not quite the pair you need? Browse more ways to convert JPG files or the AVIF converter hub for every route into and out of AVIF.

If you want the reasoning behind this JPG to AVIF route, JPG, PNG, WebP and AVIF compared explains how transparency, detail and browser support decide the format.

JPG

JPEG image

Used for photos and compact web images.

Family: Images
MIME: image/jpeg

→

AVIF

AV1 Image File

Designed for high-efficiency modern images.

Family: Images
MIME: image/avif

The delivery decision for this JPG to AVIF route

Choose AVIF when its particular balance of compatibility, alpha, animation, and file size matches the destination better than JPG.

What changes between the JPG model and the AVIF deliverable

Both formats are lossy, so this adds a second round of compression; convert from the best original you have rather than an earlier export.
Treat JPG-specific metadata fields as optional in the AVIF result until you have actually confirmed they survived.

Reading JPG correctly and satisfying what AVIF expects

What can fail when JPEG image is interpreted

Repeated encoding introduces ringing or blocks, and transparent areas must become opaque.

What AV1 Image File cannot safely promise

Older apps may not decode AVIF, and aggressive encoding can smear fine texture despite a small file.

How the AVIF writer handles this route

The writer builds a high-efficiency AV1-derived still image with HDR and alpha capabilities and labels the result as image/avif. The receiving application - Not the extension alone - Is the final compatibility test.

How to confirm the converted AVIF actually works

Record the JPG evidence before conversion

View text edges, faces, gradients, and high-contrast detail at the intended display size.

Test the AVIF file in its receiving workflow

Inspect gradients and texture at 100% and open the file on the oldest required device.