Convert
Convert JPG to AVIF
Convert a JPEG photograph to AVIF. AVIF is the most efficient image format a browser can display today, and it carries a full alpha channel.
It is the right choice for a website you control. Photographs are where the saving is largest - a JPEG re-encoded as AVIF is typically 30-50% smaller at the same visible quality, because AVIF's compression was designed for exactly this kind of image.
How to convert JPG to AVIF
- Drop one JPG file or a whole folder of them onto the upload area.
- The page checks whether your browser can write AVIF before it converts.
- Compare the original and converted sizes.
- Download the AVIF, or the whole batch as a ZIP.
Supported formats
This tool accepts JPG files. Everything is decoded by your own browser, so the formats available depend on what your browser can open - which for HEIC in particular varies between Safari and other browsers.
Because the image is rebuilt from raw pixels, EXIF metadata such as camera details, timestamps and GPS coordinates does not carry into the result. Orientation is applied to the pixels first, so photographs stay the right way up. Embedded colour profiles are also dropped and the output is saved as sRGB, which can shift colours slightly in wide-gamut photographs. Animated files are refused rather than being flattened to a single frame.
Frequently asked questions
Will converting a JPG to AVIF lose quality?
A little, and it is worth understanding why. The JPEG you start with has already been compressed once, and re-encoding it to AVIF is a second lossy pass, so some detail is lost that no format can recover. In practice the AVIF will usually look indistinguishable at a much smaller size, because AVIF is a far more efficient format - but if you have the original, converting that rather than the JPEG will always give a better result.
Which browsers can create AVIF files?
Writing AVIF needs an encoder the browser itself provides, and at the time of writing only Chromium-based browsers (Chrome, Edge, Opera, Brave) have one. Firefox and Safari can display AVIF perfectly well but cannot create it. This page checks your browser before it offers AVIF, and if your browser cannot write it the option is disabled with an explanation rather than silently handing you a PNG with the wrong name on it - which is what happens when a tool asks for AVIF without checking.
Can I convert a whole folder at once?
Yes. Add as many JPG files as you like and each one is decoded and written back out as a AVIF in turn, then downloaded together as a ZIP. Nothing about a JPG to AVIF conversion varies per file, so there is no setting to get wrong halfway through a batch. A file that is damaged or is not really a JPG is refused as you add it, named individually so you know which one, and the rest of the batch is unaffected.
Is my JPG uploaded anywhere?
No. Your browser decodes the JPG and writes the AVIF itself, using encoders it already ships with, so the file never leaves your device. That also means there is no size limit imposed by our bandwidth - only by how much of the decoded JPG your device can hold in memory at once, which is why a very large image can fail on a phone and succeed on a laptop.
Related tools
- AVIF to JPG ConverterConvert AVIF images to JPG for software that cannot open them.
- JPG to WebP ConverterConvert JPG to WebP in your browser and cut file size by 25-35% at the same quality.
- JPG to PNG ConverterConvert JPG and JPEG images to PNG in your browser.
- Image ConverterConvert images between JPG, PNG, WebP and AVIF in your browser.
Looking for something else? Browse all ImageUtility tools.