Convert Image to AVIF

JPG/PNG/WebP → AVIF, the smallest modern format. See the bytes saved. Nothing uploaded.

Stays on your device. This tool runs in your browser — nothing you paste or open ever leaves it. Nothing uploaded, nothing to leak.

Image

Drop an image here or browse JPG · PNG · WebP · up to 25 MB · encoded in your browser, never uploaded

First convert loads the encoder (~3 MB) once, then it's cached.

Run the tool first — there’s no result to send yet.

How to convert to AVIF

Add a JPG, PNG or WebP, choose a quality — Smaller, Balanced or High — and press Convert. The AVIF downloads and the tool shows the original size, the new size and the percentage saved. Encoding runs on your device with a WebAssembly encoder, so nothing is uploaded.

Convert to AVIF — TechWhack Score

9.5/10

Privacy 10/10

The AVIF encode runs in your browser via WebAssembly — nothing is uploaded.
Speed 10/10

Encodes locally and shows the result without a server trip.
Features 8/10

Converts to AVIF — typically 30–50% smaller than JPG or WebP — and shows you exactly how many bytes you saved.
Free 10/10

No sign-up, no watermark, no daily limit.

Verdict: Squeeze an image to AVIF in your browser and watch the byte savings add up — no metered cloud converter involved.

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AVIF is a modern image format that is typically 30–50% smaller than JPG or WebP at the same quality. This tool converts an image to AVIF entirely in your browser using a WebAssembly encoder, and shows you exactly how many bytes you saved. Nothing is uploaded.

Why AVIF

AVIF (AV1 Image File Format) gives the best compression of any widely-supported web format — smaller than JPG and WebP at matching quality, with transparency and HDR support. It is supported in all current versions of Chrome, Edge, Firefox and Safari. Use it to cut image weight and speed up your pages.

FAQ

How much smaller is AVIF compared to JPG or WebP?AVIF is roughly half the size of a JPEG at visually similar quality, and around 20 to 30 percent smaller than WebP, thanks to the modern AV1 codec it is built on. The tool shows the exact bytes saved on your specific image so you can confirm the gain.

Is AVIF supported by all browsers?Modern versions of Chrome, Firefox, Edge, and Safari support AVIF, but very old browsers do not, so many sites serve AVIF with a JPG or WebP fallback. For maximum compatibility on a public site, keep a fallback image in a widely supported format.

Can this tool open or convert an existing .avif file?No. It encodes other images into AVIF; it does not decode files that are already AVIF. If you need to turn an .avif back into JPG or PNG, use a general image converter instead.

Should I use AVIF or WebP for my website images?Choose AVIF when you want the smallest files and best detail, especially for large hero images and photos; choose WebP when you need broader compatibility and faster encoding. A common strategy serves AVIF first and falls back to WebP or JPG.

Does converting to AVIF happen on a server?No. Encoding runs in your browser using WebAssembly, so the image never leaves your device. You get next-generation compression without uploading your photos anywhere.