Convert JPG to AVIF

AVIF is an image format built on the AV1 video codec. In practice, a photo saved as AVIF is often around half the size of the same photo as JPG at similar visual quality; the real savings depend on the picture and the setting. AVIF also supports transparency, which JPG does not.

The main reason to convert images to AVIF is website speed: smaller images load faster, use less mobile data and take less space on your server. It can also help if you want to store a large photo library in less space and your apps can open AVIF.

This AVIF converter is not limited to JPG. It also handles PNG to AVIF, WebP, HEIC and any other format your browser can read.

Browsers cannot save AVIF on their own, so the tool runs the libavif encoder (AV1) as WebAssembly inside your browser. The encoder downloads on first use, about 1 MB. Your images are never uploaded; all the work happens on your device.

AVIF encoding is heavy, so it is slower than saving JPG or WebP. A 12-megapixel photo typically takes 5–20 seconds on a laptop, and longer on a phone. Batches are processed one image after another; several results download as one ZIP, and each file can also be saved separately.

Transparent PNGs stay transparent. The photo's orientation flag is applied to the pixels, so portrait shots stay upright.

The slider starts at 90%, which looks excellent but saves less. AVIF holds up well at lower settings, so it pays to experiment.

Goal	Suggested quality	Notes
Archive, large prints	85–90%	hard to tell from the original
Hero images, product photos	65–80%	good balance of size and detail
Thumbnails, backgrounds, blog images	50–65%	small files, slight softening possible

A quick method: convert one typical image at 75%, open the before/after slider and zoom into fine detail such as hair, grass or text. If you see no distracting difference, try 65%. If edges smear or smooth areas get blotchy, go back up. Then convert the rest at the setting you picked.

Current versions of Chrome, Edge, Firefox and Safari 16 or later display AVIF, so it is safe for most website visitors.

Desktop software is more mixed. Some older image viewers, some Windows setups, email clients, older editing apps and many upload forms do not accept AVIF. So:

• For email, printing and forms, stick with JPG.
• For websites, AVIF is a good choice; add a JPG fallback with the HTML picture element if you want to cover every browser.
• Not sure? JPG to WebP is a safe middle ground: smaller than JPG and supported even more widely.

Need to go back? AVIF to JPG converts AVIF files to JPG.

The AVIF output does not include EXIF data: date taken, camera model and GPS location are not written to the file. For web images that is usually a plus, since location data does not leak, but keep your originals if the dates matter.

• Deleting the original JPG. AVIF is lossy, and it cannot undo artifacts already in a JPG. Keep the source files.
• Oversized images. A 4000 px wide photo is too big for a web page even as AVIF. Use Resize image to bring it down to the display size, for example 1600–2000 px, then convert.
• Huge batches. Encoding 50 large photos can take minutes. Keep the tab open, or work in smaller groups.