AVIF compresses a photo smaller than JPG or even WebP at a similar visual quality, which is why more sites are switching to it. Filemorph converts a JPG to AVIF on your iPhone, no upload required.
If you are publishing photos to a website or app that supports modern formats, AVIF is currently the smallest practical option for photographic images — smaller than JPG, and usually smaller than WebP too, at a comparable quality level. That translates directly into faster page loads.
Filemorph encodes the JPG using ImageIO's AV1 image encoder. AVIF encoding is more computationally intensive than JPG, so a large batch takes a little longer, but everything still runs entirely on-device.
In the app: Convert → To AVIF.
AVIF delivers the smallest file size of the mainstream image formats at a given visual quality, which matters most for websites and apps where every kilobyte affects load time. Use JPG or WebP instead for platforms that do not yet support AVIF.
Yes. Unlike web converters that upload your files to a server, Filemorph converts every file locally using Apple's frameworks. Nothing leaves your device, and it works with no internet connection. This conversion is in the free tier.
It varies by image, but AVIF commonly comes in 20 to 50% smaller than a JPG of similar visual quality.
Support has grown substantially, but a few older browsers and many non-web apps still do not read AVIF. Check where the image is going before relying on it exclusively.
Yes, it is in Filemorph's free tier.
Free, on-device, no upload. Plus 300+ more file operations.
Download on theApp Store