Free Online JPG to AVIF Converter
Convert JPG to AVIF for smaller file sizes. Free online conversion.
Max file size 50MB. Sign up for more.
| File Name | Size | Convert To |
|---|
Checking files and selected output formats.
JPG to AVIF: next-generation web compression
AVIF's AV1 codec outperforms JPG's DCT algorithm by 40-50% in compression efficiency at equivalent SSIM quality scores. The conversion decodes the JPG's DCT-compressed data and re-encodes with AV1's prediction-based compression, which uses larger and more flexible transform blocks, directional intra prediction, and advanced entropy coding (arithmetic vs JPG's Huffman). Since both are lossy, quality can only be preserved or further reduced — never improved beyond what the JPG source captured.
Convert JPG to AVIF when optimizing web performance — the same visual quality at 40-50% less bandwidth directly improves Core Web Vitals and page load speed. AVIF is supported in Chrome, Firefox, and Safari 16+. Serve the original JPG as fallback for older browsers.
JPG vs AVIF: Side-by-side
Technical comparison of the two formats — useful for deciding which to use, or for confirming what changes during conversion.
| Property | JPG | AVIF |
|---|---|---|
| Full name | JPEG (Joint Photographic Experts Group) | AV1 Image File Format |
| Year introduced | 1992 | 2019 |
| Developer / standard body | JPEG Committee | Alliance for Open Media |
| MIME type | image/jpeg | image/avif |
| File extension | .jpg / .jpeg | .avif |
| Compression | Lossy (DCT-based) | Lossy or lossless (AV1) |
| Color / data depth | 24-bit truecolor | 8/10/12-bit |
| Max dimensions / size | 65,535 × 65,535 px | 65,536 × 65,536 px |
| Transparency | No | Yes |
| Animation | No | Yes |
| Standard / specification | ISO/IEC 10918 | AOMedia AV1 |
| Best for | Photos, web images, email attachments | Next-gen web images — 50% smaller than JPG, 20% smaller than WebP |
JPG to AVIF FAQ
Quick answers about compatibility, quality, metadata handling, and the most common reasons to convert JPG files to AVIF.
Can I convert JPG to AVIF without losing quality?
What is JPG?
How do I open JPG files?
How much smaller will my JPG become as AVIF?
Do all browsers support AVIF?
<picture> element.Guides and Fixes for JPG to AVIF Converter
Read image-format guides, transparency tips, compatibility fixes, and file-size advice related to JPG to AVIF Converter.
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