How do I convert a JPG to AVIF?

Drop your image onto the upload zone (or click to browse, or paste with Ctrl+V / Cmd+V), pick a quality, then click Convert to AVIF. Encoding runs on your device with a progress bar and a cancel option; when it finishes, download the file. It is completely free and runs entirely in your browser, so your image is never uploaded.

Are images uploaded to a server?

No. The AVIF is encoded entirely in your browser with a WebAssembly encoder; the image never leaves your device. This is the core design principle of the tool.

Why does AVIF encoding take a while?

AVIF uses the AV1 codec, which is computationally heavy, and here it runs single-threaded in your browser. Large images can take several seconds — it runs in a background thread so the page stays responsive, and you can cancel anytime.

AVIF typically produces significantly smaller files than JPEG at the same visual quality, and it supports transparency and HDR. Smaller images mean faster page loads — useful for the web.

Is AVIF supported everywhere?

AVIF is supported by all current major browsers (Chrome, Firefox, Safari, Edge). Very old browsers or some apps may not open it yet; keep a JPG/PNG copy if you need maximum compatibility.

Is converting JPG to AVIF free?

Yes — encoding your JPG, PNG, or WebP image to the ultra-compact AVIF format is completely free, forever. No account, no sign-up, and no limit on how many files you convert. The AV1 encoder runs in your browser via WebAssembly; your images are never sent to any server. The site is ad-supported.

Does it work offline?

Yes. The encoder is part of the page, so after it loads conversion works offline.

Convert JPG to AVIF

JPG to AVIF is a free browser-based tool that re-encodes an image to AVIF, the modern format that produces the smallest files at a given quality. Encoding runs on your device with a WebAssembly encoder (in a background thread, so the page stays responsive and you can cancel) — no upload, no account, and it works offline.

Convert JPG, PNG, or WebP images to compact AVIF directly in your browser — free, no upload required.

100% Free — Forever. No fees, ever.
Private: files are processed locally in your browser and never sent to a server.
No upload, no account, no sign-up.

How do I convert a JPG to AVIF?: Drop your image onto the upload zone (or click to browse, or paste with Ctrl+V / Cmd+V), pick a quality, then click Convert to AVIF. Encoding runs on your device with a progress bar and a cancel option; when it finishes, download the file. It is completely free and runs entirely in your browser, so your image is never uploaded.
Are images uploaded to a server?: No. The AVIF is encoded entirely in your browser with a WebAssembly encoder; the image never leaves your device. This is the core design principle of the tool.
Why does AVIF encoding take a while?: AVIF uses the AV1 codec, which is computationally heavy, and here it runs single-threaded in your browser. Large images can take several seconds — it runs in a background thread so the page stays responsive, and you can cancel anytime.
Why convert to AVIF?: AVIF typically produces significantly smaller files than JPEG at the same visual quality, and it supports transparency and HDR. Smaller images mean faster page loads — useful for the web.
Is AVIF supported everywhere?: AVIF is supported by all current major browsers (Chrome, Firefox, Safari, Edge). Very old browsers or some apps may not open it yet; keep a JPG/PNG copy if you need maximum compatibility.
Is converting JPG to AVIF free?: Yes — encoding your JPG, PNG, or WebP image to the ultra-compact AVIF format is completely free, forever. No account, no sign-up, and no limit on how many files you convert. The AV1 encoder runs in your browser via WebAssembly; your images are never sent to any server. The site is ad-supported.
Does it work offline?: Yes. The encoder is part of the page, so after it loads conversion works offline.

AVIF (AV1 Image File Format) is based on the royalty-free AV1 video codec and often produces 30–50% smaller files than JPEG at equivalent visual quality.
AVIF supports transparency (alpha), wide colour gamut, and HDR — features JPEG lacks.
AVIF encoding is CPU-intensive; without multi-threading (unavailable here because cross-origin isolation is off) it runs single-threaded, which is why a Web Worker + cancel are used.
All current major browsers can display AVIF, making it a strong choice for fast-loading web images.
Because encoding is client-side, the image is never transmitted, keeping it private.

🅰️ Convert JPG to AVIF

Convert JPG to AVIF