Convert HEIC to AVIF without uploading
Drop your HEIC 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 HEIC to AVIF?
HEIC is the default photo format on iPhones. It saves space on your phone, but Windows, Android and most websites still refuse to open it. 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
AVIF is the closest thing to HEIC that browsers actually support — both are built on modern video compression, so the picture stays small without visible quality loss. It is the right target when page weight is what matters.
What it costs you
AVIF encoding is slow. The same photo that converts to JPG in well under a second took about 11 seconds to encode as AVIF in our measurement, and a batch of holiday photos will take a while. Support is also newer: current browsers handle it, older desktop apps generally do not.
What happens to the file size
On this site's own 1440×960 test image, 287 KB of HEIC became 304 KB of AVIF. Slightly larger, which is the cost of the format change rather than a fault. Drop the quality slider a little if size matters more than fidelity. Encoding took about 12 seconds per image here, so a large batch needs patience.
How it works
Drop your HEIC 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
Why is this conversion so much slower than the others?
AVIF compression searches much harder for redundancy than JPG does, and that search costs time. It runs on your own device, so the speed depends on your machine rather than on a queue somewhere. The payoff is a file close to the HEIC original — 304 KB against 287 KB in our test, where JPG came out at 581 KB.
Is it really private? Where do my HEIC files go?
Nowhere. The HEIC 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 HEIC 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.