JPG to AVIF
WEBConvert JPG images to AVIF online — free, fast and private. Your files never leave your browser. Nothing is uploaded.
Add at least one image to continue.
100% private — images never leave your browser.
What is the JPG to AVIF tool?
JPG to AVIF re-encodes your JPG photos into the web's most efficient image format — free, in your browser, and nothing is uploaded to any server. AVIF compresses photographic images far better than JPG: at comparable visual quality, an AVIF is often around half the size. For a site full of photos, converting the image library to AVIF is one of the highest-impact page-speed wins available, cutting bandwidth and improving Core Web Vitals without a visible quality change.
This converter is built for that job without the usual friction. There's no account, no API key, no daily quota and no upload queue — the AVIF encoding runs locally in your browser, so a batch of large photos converts as fast as your own machine allows and your images stay private throughout. A quality slider controls the size-versus-detail trade-off, and multiple files download together as a single zip.
Two honest notes. First, JPG is already lossy, so re-encoding adds a small further loss — keep the slider high and it stays invisible, but archive your originals. Second, in-browser AVIF encoding depends on the browser: Chromium browsers (Chrome, Edge) encode reliably, some others may not — if yours fails, the JPG to WebP converter is the closest widely-supported alternative.
How to use the JPG to AVIF
- Open the JPG to AVIF converter — From is preset to JPG and the target to AVIF.
- Click «Choose images» or drop your .jpg files into the drop zone; whole batches are fine.
- Set the quality slider — high values keep photos visually identical while still cutting the size sharply.
- Press «Convert» — the AVIF is encoded locally in your browser, nothing is uploaded.
- The AVIF downloads automatically; several photos arrive together as one zip.
- Check the size difference — photo-heavy files often shrink to a fraction of the original.
Frequently asked questions
How much smaller is AVIF than JPG?
It depends on the image, but at comparable visual quality an AVIF is often around half the size of the JPG — sometimes better for smooth, photographic content. Run your own photos through and compare; the result is shown as a real downloadable file, not an estimate.
Does converting JPG to AVIF lose quality?
Slightly — both formats are lossy, so re-encoding adds a small loss controlled by the quality slider. At high settings it's invisible in normal viewing. Converting can't improve on the JPG's existing quality, so keep your originals as masters.
AVIF vs WebP — which should I convert my JPGs to?
AVIF compresses better and is the more future-facing choice; WebP is supported by slightly more software and encodes in any modern browser. If your audience uses current browsers, pick AVIF; if you need the safest reach, WebP.
Which browsers can display AVIF images?
Chrome, Edge, Firefox and Safari 16+ all display AVIF. For visitors on very old browsers, serve a JPG or WebP fallback using the HTML picture element.
Are my photos uploaded during the conversion?
No. Decoding the JPG and encoding the AVIF both happen inside your browser on your own device. Your photos never reach a server.
Is this free? Is there a daily quota?
Completely free — no sign-up, no watermark, no daily quota, no API key. Local processing means only your device's memory limits very large batches.