Convert AVIF to JPG

Where AVIF files come from

AVIF is built on AV1, a video codec, and squeezes pictures smaller than older formats can. Large websites and image services increasingly send it to browsers that support it, so a picture you save from a page can arrive as .avif even though the page seemed to show an ordinary photo.

Browsers show it without trouble. The problem is everything else: older photo viewers and editors, office programs, printing services and upload forms often do not recognize the format yet. A program that does not know the format shows a blank icon or an error instead of the picture. A JPG copy solves that in one step, and it is the format the person on the other end is least likely to have trouble with.

Octoolo's Photo Editor opens AVIF itself, with nothing extra to install, and its Convert tool reads it the same way. Open the picture in the editor instead when you want to crop or straighten it before exporting.

Expect a bigger file than the AVIF

AVIF is one of the most efficient picture formats around, so the JPG copy is usually larger, often noticeably so. That is normal and not a sign that something went wrong.

Resist pushing the quality far down to match the AVIF's size. JPG gets blocky long before it gets that small, and the picture has already been compressed once by the website. Somewhere between 80 and 90 keeps it looking like the original at a size every upload form accepts. Pictures with smooth gradients, such as a clear sky or a plain studio backdrop, show stepped bands first at low settings, so give those a few points more. The result shows the exact file size and the percent change for the setting you choose, recalculated each time you move the slider.

When a form sets a limit in KB, start at 85 and step down by five while watching the number, and stop as soon as it fits. If the picture is far bigger in pixels than you need, open it in the Photo Editor and use Export, whose Size list makes it narrower.

Transparent and HDR AVIFs

AVIF can store transparency and HDR brightness. JPG can store neither, so both are flattened in the copy:

• See-through parts are filled with white by the Convert tool. The Photo Editor's Export fills them with white too, or with any color you pick under See-through parts become. If the transparency should stay, convert AVIF to PNG.
• HDR pictures come out in ordinary, standard range, since a JPG has no room for the extra brightness.

The JPG keeps the full pixel size of the AVIF unless you choose a smaller width. Like every picture Octoolo saves, it carries no location, camera or date details, and the .avif you started from stays as it was.

The Convert tool or the Photo Editor?

Both read AVIF and both write JPG, so pick by what else you need:

For a plain photo, either is fine. For a picture that is far too large for an upload form, Export's width list gets it down to size in one step.