How to use it
- Add your files. Drop JPG files on the page or use Choose files. Folders and ZIPs work too.
- Check that AVIF is selected. AVIF is already chosen on this page.
- Adjust options if you need to. Quality, size and other settings appear when the format has them.
- Convert and download. Press Convert; with several files, “Download all” gives you one ZIP.
What happens to your file
The picture is decoded in your browser and saved as AVIF at the quality you choose. Transparent areas are kept.
About JPG and AVIF
JPG: JPG (JPEG) is the standard photo format, small and supported everywhere.
AVIF: AVIF is a modern image format based on AV1 video: often half the size of JPG at the same quality.
Questions
Is my JPG file uploaded?
No. The conversion runs inside this browser tab, and the AVIF is created on your device. Nothing is sent to a server.
Anything to know about AVIF?
Saving as AVIF needs a browser that can encode it; the option appears only where it works.
Can I convert several JPG files at once?
Yes. Drop as many as you like, a folder or a ZIP; “Download all” saves every AVIF in one ZIP.