Convert JPG to AVIF without uploading
Drop your JPG files below. You get AVIF back in seconds. No upload, no queue, no limits, no watermark.
Drop images here or click to browse
HEIC · JPG · PNG · WebP · GIF · BMP. Nothing is uploaded.
Output:AVIF · need another format?
Why convert JPG to AVIF?
JPG is the most widely supported image format ever, but its compression is dated. Modern formats pack the same quality into far fewer bytes. AVIF is the most efficient mainstream format today. It is roughly half the size of JPG at the same quality and works in 94% of browsers.
When you actually need this
For a photo-heavy page where every kilobyte counts, AVIF beats both JPG and WebP. It is worth the slower conversion when the file will be served thousands of times.
What it costs you
You are re-compressing something already compressed, so quality cannot improve — only the file size does. Encoding is also slow: roughly 1.3 seconds for our test photo against 9 milliseconds for a JPG re-save.
What happens to the file size
On this site's own 800×600 test image, 33 KB of JPG became 21 KB of AVIF. A 37 percent saving — worthwhile in bulk, less dramatic on a single file. Encoding took roughly 1.3 seconds per image on our test machine.
How it works
Drop your JPG files above and pick a quality. Each one is decoded to raw pixels in a background thread, re-encoded as AVIF, and handed straight back to you — individually or as a ZIP. Nothing queues, because nothing leaves.
Frequently asked questions
Is it worth converting JPGs I already have?
For the web, often yes. Our test JPG dropped from 33 KB to 21 KB, a 37 percent saving, on a file that was already compressed. Across a page full of images that adds up. For photos you archive or print, stay with the original.
Is it really private? Where do my JPG files go?
Nowhere. The JPG is decoded and re-encoded as AVIF by your own browser, using WebAssembly — the same technology behind Photopea and Google's Squoosh. Load this page, switch off your internet, and the conversion still works. There is no upload step to opt out of, because there is no server to upload to.
Is there a file size or daily limit?
No. Your device does the work, so there is no bill for us to protect. The practical ceiling is your own memory: a batch of JPG files converts fine, but very large images on an older phone can run out of room, and the tool will say so rather than fail silently.
Is QuietPix free?
Yes. Free for personal and commercial use, supported by small ads placed outside the tool itself. No account, no trial, no watermark on anything you convert.