AVIF is a modern image format that keeps pictures small, but not every app, email client or upload form can open it yet. Converting AVIF to JPG gives you a file that opens everywhere, which is useful when a website or program rejects an AVIF you downloaded.
JPG is the most widely supported photo format, and it compresses photographs well. It is lossy, so some fine detail is discarded, and sharp text or line art can pick up faint blur. JPG also has no transparency, so any transparent areas of the AVIF are filled with white. Expect the JPG to be larger than the AVIF, since AVIF is usually the more efficient format. Your browser reads the AVIF, which works in current versions of Chrome, Firefox, Safari and Edge, so files may be skipped in older browsers.
Choose High for a good balance, Max for the least visible loss, or Low when file size matters most. The pixel dimensions follow the original, each file keeps its name with only the extension swapped, and no metadata or watermark is added. Everything runs in your browser, so your images are never uploaded.
Tip: if the picture has transparency you want to keep, convert to PNG or WebP instead.
Your browser has to be able to read AVIF, which current versions of Chrome, Firefox, Safari and Edge can. In an older browser the file cannot be decoded and is skipped.
Slightly. JPG is lossy, so some fine detail is discarded. At High quality the difference is hard to see in photographs.
AVIF compresses more efficiently than JPG, often by 30 to 50 percent, so the same picture takes more space as a JPG.
JPG cannot store it, so transparent areas become white. Use PNG or WebP to keep it.
Yes. Add them all, convert once and download a single ZIP. Only the extension changes. A file named holiday.avif becomes holiday.jpg.
No. The conversion happens in your browser and the files never leave your device.