Free AVIF converter

Convert any image to or from AVIF — the next-generation format with 50% smaller files than JPEG.

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Convert to or from AVIF format

AVIF Converter — Free, Fast & Private

AVIF is the most advanced image compression format available. Based on the AV1 video codec, it produces files roughly 50% smaller than JPEG and 20% smaller than WebP at the same visual quality.

MiniPx converts images to AVIF for maximum compression, and converts AVIF files back to JPG or PNG for compatibility with older software. Both directions are handled entirely in your browser.

AVIF excels at photographs, gradients, and images with subtle color transitions — areas where JPEG shows visible artifacts. The format supports both lossy and lossless compression, HDR, and wide color gamut.

Browser support has expanded rapidly: Chrome 85+, Firefox 93+, Safari 16.4+, and Edge 121+. For web delivery, AVIF is the best choice for file size, with WebP or JPG as fallback for older browsers.

AVIF encoding is more computationally intensive than JPEG or WebP, so conversion takes slightly longer. The file size savings more than compensate for the encoding time, especially for web delivery where smaller files mean faster page loads.

How it works

Upload images: Add images in JPG, PNG, WebP, or AVIF format.
Select output format: Choose AVIF for maximum compression, or JPG/PNG to convert from AVIF.
Adjust quality settings: Smart for balanced quality. Tiny for smallest possible files.
Download converted images: Save your converted files. Compare sizes to see the compression benefit.

Frequently asked questions

What is AVIF format?

AVIF (AV1 Image File Format) is a next-generation image format based on the AV1 video codec. It achieves significantly better compression than JPEG, PNG, and WebP while maintaining excellent visual quality.

How much smaller are AVIF files?

AVIF files are typically 50% smaller than JPEG and 20% smaller than WebP at equivalent quality. A 200KB JPEG photo may compress to 80-100KB as AVIF.

Which browsers support AVIF?

Chrome 85+, Firefox 93+, Safari 16.4+, Edge 121+, Opera 76+, and Samsung Internet 14.0+. Support is broad and growing.

Why is AVIF encoding slower?

The AV1 codec uses more complex algorithms than JPEG or WebP encoders. Browser-based encoding is slower than server-side. For batch conversion of many large images, expect processing to take a few seconds per image.

Should I convert all my images to AVIF?

For web delivery, AVIF offers the best compression. For sharing via email or messaging, JPG remains more universally compatible. Use AVIF for websites and apps, JPG for general sharing.

Can AVIF replace PNG for transparency?

Yes. AVIF supports alpha channels for transparency and produces much smaller files than PNG. For web graphics with transparency, AVIF is the most efficient format available.