PDFConvertersOnline.comHow to convert JPG to AVIF
- Choose the JPG photos you want to publish.
- AVIF is selected with quality 60%. Raise it for detailed shots.
- Convert, wait for the encoder, then download the .avif files or a ZIP.
Why convert photos to AVIF
AVIF is one of the most efficient image formats browsers can display today. For photographs it can often match the look of a JPG at a much smaller file size, which means faster page loads, lower bandwidth bills and a better experience on slow mobile connections. Chrome, Edge, Firefox and Safari all support it in their current versions, so it's a realistic choice for modern websites, especially if your site builder or CMS can serve a JPG fallback to the rare older browser.
Choosing a quality setting
AVIF's quality scale runs differently from JPG's, so don't copy your usual JPG numbers:
- 50–60% – typical for web photos; small files with very few visible artifacts.
- 65–75% – for portfolios, product close-ups or images with fine texture such as fabric, hair or foliage.
- Below 45% – very small files, but surfaces can start to look smooth or smeared.
Because your JPG is already compressed, there's no point going very high. Compare sizes in the results list: if an AVIF isn't clearly smaller than the original, try a lower value.
Why it takes a while
AVIF encoding is computationally heavy. Browsers can display AVIF but mostly can't create it, so this page brings its own encoder compiled to WebAssembly and runs it in a background thread. A typical 12-megapixel photo may take several seconds, and a large batch will take a few minutes. The progress bar shows which file is being encoded, and you can keep using other tabs meanwhile. Resizing first speeds things up: a photo scaled to 2000 pixels wide with Resize Image encodes much faster and is usually big enough for any web page.
Using AVIF on your website
Many sites add AVIF with a fallback: the HTML picture element lists the .avif file first and the original .jpg second, and each browser picks the first format it understands. Some content systems and image plugins can do this automatically once you upload both versions. If your platform only allows one file per image, check that it accepts .avif uploads before replacing your JPGs.
Keep your originals
Treat the AVIF files as publishing copies. Some email programs, older photo viewers and upload forms don't accept AVIF, and each lossy conversion drops a little detail. Store the original JPGs as your master files. If you'd like a format with broader support and still-good savings, JPG to WebP is the other option. All encoding happens locally, so your photos don't leave the device.
More ways to use this tool
Frequently asked questions
How much smaller is AVIF than JPG?
It depends on the photo and settings, but AVIF files are often much smaller at similar visual quality. The results list shows the exact before and after size for each image.
Why is the conversion slow?
AVIF compression is complex, and the encoder runs as WebAssembly in your browser. Large photos take several seconds each.
Can every website use AVIF?
All current major browsers display it. For email newsletters or older systems, stick with JPG.
Is EXIF data kept?
No. The AVIF is created from the image pixels only, so camera details and GPS location are not included.
Can I convert other formats to AVIF too?
Yes. If you drop PNG, WebP or HEIC files here, they are converted as well. The AVIF Converter page covers all formats.
Does the page freeze while encoding?
No. The encoder works in the background, so you can scroll, switch tabs or read while it runs. Keeping the tab open speeds things up on some phones.