Why convert JPG to AVIF?
AVIF (AV1 Image File Format) is the next-generation image format developed from the open-source AV1 video codec. At the same perceptual quality, AVIF files are typically 40–50% smaller than JPG and 20–30% smaller than WebP. For websites with many images — product photos, blog post images, portfolio galleries — switching from JPG to AVIF can meaningfully reduce page weight and improve Core Web Vitals scores.
JPG vs AVIF vs WebP: compression comparison
| Format | Typical file size (same quality) | Transparency | Browser support |
|---|---|---|---|
| JPG | Baseline (1×) | No | All browsers |
| WebP | ~25–35% smaller | Yes | Chrome, Firefox, Safari 14+, Edge |
| AVIF | ~40–50% smaller | Yes | Chrome 85+, Firefox 93+, Safari 16+ |
How to convert JPG to AVIF
- Drop your JPG / JPEG files — drag onto the upload zone, click to browse, or paste from clipboard. Up to 30 files at once.
- Adjust quality — 80% is the recommended starting point: excellent visual quality at roughly half the JPG file size. Go lower for maximum compression, higher if you are archiving originals.
- Download — individual files or all as a ZIP.
Using AVIF on your website
The safest way to serve AVIF with a fallback for older browsers is the HTML <picture> element:
<picture> <source srcset="photo.avif" type="image/avif"> <source srcset="photo.webp" type="image/webp"> <img src="photo.jpg" alt="Description"> </picture>
The browser picks the first format it supports. Modern browsers get AVIF; older ones fall back to WebP or JPG without any broken images.
Privacy
All processing runs in your browser using the Canvas API and the browser's built-in AVIF encoder. Your JPG files are never sent to any server — we cannot see them, and nothing is stored after you close the tab.