Free AVIF Image Converter

AVIF is a modern image format built on the AV1 codec. It typically produces much smaller files than JPEG, PNG or WebP at the same visual quality, so your pages load faster and use less bandwidth. Smaller, faster images also help with Core Web Vitals and search performance.

Yes. The tool is completely free with no sign-up, no watermark and no upload limits. Everything runs in your own browser, so there is nothing to pay for and no account to create.

Yes. Drop in or select as many images as you like and the tool converts them one after another, right in your browser. Each file shows its own size saving, and you can download them individually or grab everything in a single ZIP with one click. You can keep adding more images to the batch at any time.

No. Your files never leave your browser. The conversion happens locally on your device, so your images are never sent to us or stored anywhere, even when you convert a large batch. It is completely private.

Yes. The converter uses a built-in AVIF encoder that runs entirely in your browser, so it works in Chrome, Edge, Firefox and Safari without relying on the browser's own AVIF support. The first conversion loads the encoder, which can take a moment, then conversions are quick. Everything stays on your device, with nothing uploaded.

The quality slider controls the trade-off between file size and visual detail: lower values create smaller files with more compression, while higher values keep more detail at a larger size. The resize option can optionally scale large images down to a maximum width for even smaller files. Change either setting and the tool re-converts every image in your batch instantly so you can compare.