Convert JPG to AVIF
Convert JPG to AVIF for smaller files
100% in your browser — files never leave your device
Higher quality = larger file size. Recommended: 75-85
Frequently asked questions
How do I convert JPG to AVIF?
At matched visual quality, AVIF files typically run 20–50% smaller than the equivalent JPEG, which is why AVIF has become a default optimization target for image-heavy websites. This re-encodes your JPG's pixel data into AVIF, with the quality slider controlling the size-versus-quality trade-off.
Is this JPG to AVIF converter free?
Yes — completely free with no signup, no watermarks, and no file limits. The tool is open source and will stay free.
Do my JPG files get uploaded to a server?
No. Conversion runs entirely in your browser using WebAssembly. Your JPG files never leave your device, which also makes it faster than upload-based converters.
Will converting JPG to AVIF lose quality?
AVIF is a lossy format, so some compression is applied — you control the trade-off with the quality slider (default 65%). At 85% or above the difference is rarely visible.
Can I convert multiple JPG files at once?
Yes. Drop as many JPG files as you like — they convert in batch and you can download the results individually or as a single ZIP.
Why does AVIF take longer to encode than JPEG or WebP?
AVIF's encoder does substantially more analysis per image to achieve its smaller file sizes, so encoding is slower than JPEG or WebP — noticeable on large images or batches, even though it's all running locally in your browser.