JPG to AVIF Converter
Convert JPG to AVIF online for free. Keep transparent areas and choose image quality directly in your browser, without uploading files.
Free to use · No account · Files processed on your device
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How to use JPG to AVIF
- Select your JPG images from your device.
- AVIF is selected for this page. Adjust the quality setting and, for JPG, choose a background for transparent areas.
- Click Convert to AVIF and download each result or the ZIP for a batch.
When to use this tool
Create AVIF copies of JPEG photos to compare modern compression for your website. Encoding runs on your device and can take longer than JPEG or WebP, especially for large images. Keep a compatible fallback when your publishing workflow needs one.
Need help choosing settings? Read WebP vs AVIF: choosing a format for web images.
Frequently asked questions
Does AVIF conversion upload my image?
No. AVIF is encoded locally using WebAssembly. Your browser downloads the encoder code, but your selected image is processed on your device.
Is a new format guaranteed to be smaller?
No. The result depends on content, quality, and the original compression. Compare the actual file sizes and inspect the image, particularly text and fine edges, before replacing an original.
Are my files uploaded or stored?
The conversion happens in your browser. Keep the original files and save your downloads before closing the page. Learn how local processing protects your images.