How to convert JPG to AVIF online
Add your JPG files
Drop JPG files into the box, choose them from your device, or paste them from your clipboard. You can add hundreds at once.
Convert JPG to AVIF privately on your device
Each JPG is re-encoded as AVIF on your device. AVIF takes longer than other formats, so large photos need a little patience.
Download your AVIF files
Save each file on its own, or take them all in one ZIP. Your files stay private: they never leave your device, so there is no upload to wait for.
Why convert JPG to AVIF?
AVIF is the newest mainstream image format. It can store a photo in roughly half the space of a JPG at similar quality, which makes it a strong choice for fast websites.
The trade-offs are compatibility and speed. Many editing programs and older devices can't open AVIF yet, and encoding takes longer than JPG or WebP, especially for large photos.
| Compared on | JPG | AVIF |
|---|---|---|
| Type | Lossy | Lossy or lossless |
| Transparency | No | Yes |
| Animation | No | Yes |
| Opens on | Everything | Current browsers. Many editors can't open it yet |
| Best for | Photos you share, upload or print | The smallest photos on modern websites |
Questions about converting JPG to AVIF
Which browsers support AVIF?
Current versions of Chrome, Firefox, Safari and Edge. Offer a JPG or WebP fallback for older browsers.
Why is it slower than other conversions?
AVIF compresses harder, which takes more processing. Everything runs on your device, so large photos on a phone take longer.
Can I open AVIF in my photo editor?
Support is growing but not universal. If you plan to edit the image, keep the original JPG.
Is AVIF better than WebP?
For photos, AVIF is usually the smaller file, while WebP is faster to create and opens in more tools. For a website with many photos AVIF often wins on size. For the widest compatibility, choose WebP.
Are my JPG files private?
Yes. Sanil.app converts your JPG files on your device, so they are never uploaded and never reach a server. They stay yours.