UnlimitedConvert
JPG to AVIF Converter
Turn JPG (JPEG) files into AVIF in seconds. Everything happens on your device: nothing is uploaded, and there's no limit.
Your images are processed in this browser tab and never uploaded.
Why convert JPG to AVIF?
JPG has no transparency and loses a little quality each time it's re-saved.
AVIF gives the smallest files of any image format, ideal for fast websites.
What to expect
- AVIF encoding takes a few seconds per large photo because it compresses much harder than other formats.
How to convert JPG to AVIF
Add your files
Drop your JPG files into the box or tap “select files”. Add as many as you like.
Pick the options
Set the quality. AVIF stays sharp even at 60–75%, with very small files.
Convert and download
Press Convert. Download each AVIF on its own, or everything at once as a ZIP file.
JPG vs AVIF
| JPG | AVIF | |
|---|---|---|
| Full name | JPEG (Joint Photographic Experts Group) | AV1 Image File Format |
| Compression | Lossy | Lossy |
| Transparency | No | Yes |
| Animation | No | Yes |
| Best for | photos you want to share, email or upload anywhere | the fastest-loading website images |
| Support | Opens on every phone, computer, browser and app. | Current Chrome, Edge, Firefox and Safari show AVIF. Many desktop apps and older devices don't yet. |
About the formats
JPG (JPEG (Joint Photographic Experts Group), 1992) is the most widely used photo format in the world. It uses lossy compression that throws away detail the eye barely notices, which keeps photos small. JPG and JPEG are the same format: the shorter extension comes from old Windows versions that only allowed three letters.
AVIF (AV1 Image File Format, 2019) is the newest major image format, based on the AV1 video codec. It usually produces the smallest files of all, often half the size of JPG, with transparency and HDR support.
Frequently asked questions
How do I convert JPG to AVIF?
Drop your JPG files into the box above (or tap Select files), check the options, then press Convert. Each AVIF downloads on its own, or you can download them all as one ZIP file.
Are my files uploaded anywhere?
No. The conversion runs entirely in your browser on your own device. Your JPG files are never sent to a server, so they stay private, and it works even on a slow connection once the page has loaded.
Is there a limit on how many JPG files I can convert?
No. Convert as many as you like, for free, without signing up. Very large batches are processed one after another so your browser stays responsive.
Will I lose quality converting to AVIF?
AVIF uses lossy compression, but at the default 90% quality the difference is practically invisible. Move the Quality slider up for the highest fidelity or down for smaller files.
Does it work on iPhone and Android?
Yes. It works in Safari, Chrome, Firefox and Edge on phones, tablets and computers. Nothing to install.