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Convert JPG to AVIF Online

Up to 50% smaller than JPEG, free, no upload required

AVIF is the most efficient image format currently available for web delivery. Converting JPG to AVIF reduces file sizes by up to 50% compared to JPEG at the same visual quality, improving page load speed and Core Web Vitals scores. Note: AVIF encoding is compute-intensive and may take several seconds per image.

Up to 50% smaller

vs equivalent JPEG

No uploads

Files stay on your device

Quality control

Adjustable AVIF quality

60
Smaller fileBetter quality

AVIF encoding is compute-intensive. Conversion may take 5 to 30 seconds per image. All processing runs in your browser.

Drop JPG files here or click to browse

All processing stays in your browser. Nothing is uploaded.

Why use AVIF instead of WebP or JPEG?

AVIF is the newest generation of web image formats, achieving better compression than both JPEG and WebP. For website images where load speed is critical and you target modern browsers, AVIF delivers the best quality-to-file-size ratio currently available.

Better than WebP for most images

AVIF typically saves an additional 15 to 25% over WebP at the same quality, on top of WebP's existing advantage over JPEG.

Significant LCP improvement

Largest Contentful Paint is directly affected by hero image size. Converting large JPEGs to AVIF is one of the highest-impact LCP optimizations.

Supported by modern browsers

Chrome, Firefox, Safari 16+ and Edge all support AVIF, covering over 90% of global browser usage as of 2024.

HDR and wide color gamut

AVIF supports 10-bit and 12-bit color depth, making it suitable for HDR photography and high-quality product images.

Frequently asked questions

How much smaller is AVIF compared to JPEG?

AVIF typically produces files 40 to 55% smaller than JPEG at the same visual quality, based on testing by Google and other researchers. This is a larger saving than WebP, which achieves 25 to 34% over JPEG. The saving varies by image content and encoding settings.

Why does AVIF encoding take longer than other formats?

AVIF is based on the AV1 video codec, which uses a more computationally intensive compression algorithm than JPEG or WebP. Browser-side encoding via WebAssembly is slower than native code. Expect 5 to 30 seconds per image depending on image size and device speed. The quality and file size savings justify the encoding time for web publishing workflows.

Is AVIF supported by all browsers?

AVIF is supported by Chrome, Firefox, Safari (version 16+) and Edge, covering over 90% of global browser usage. It is not supported by Internet Explorer. For maximum compatibility, serve AVIF with a WebP or JPEG fallback using the HTML picture element.

What quality setting should I use for AVIF?

AVIF quality does not map directly to JPEG quality. AVIF quality 60 typically produces output equivalent in appearance to JPEG quality 80 to 85 at significantly smaller file size. Start at quality 60 and adjust based on your visual quality requirements.

Are my files uploaded to a server?

No. All conversion happens entirely in your browser using WebAssembly. Your files never leave your device.