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AVIF compressor

Compress AVIF images or convert any image to AVIF — the format that delivers the smallest files with the best visual quality.

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AVIF output, Smart quality — best compression-to-quality ratio available

AVIF Compressor — Free, Fast & Private

AVIF is the most efficient image format available in 2026. Based on the AV1 video codec, it produces files that are 30-50% smaller than JPEG and 20-30% smaller than WebP at the same visual quality. Every major browser now supports it — Chrome, Firefox, Safari, and Edge all render AVIF natively.

There are two ways to use this tool. If you already have AVIF images, you can compress them further by adjusting the quality preset. If you have JPEG, PNG, or WebP images, you can convert them to AVIF for significantly smaller file sizes. Either way, the process runs entirely in your browser.

AVIF compression works particularly well on photographs and images with smooth gradients. At quality levels where JPEG shows visible banding and WebP shows slight blurring, AVIF maintains clean colour transitions and sharp detail. This makes it the best choice for product photos, portfolio images, and hero banners where visual quality is non-negotiable but file size still matters.

The format supports transparency (alpha channel), HDR colour, and both lossy and lossless compression. This means AVIF can replace JPEG for photos and PNG for graphics with transparency — one format instead of two. For web developers, this simplifies the image pipeline considerably.

One consideration: AVIF encoding is more computationally intensive than JPEG or WebP. On MiniPx, compression still happens in seconds because it runs locally on your device, but very large images (8000px+) may take a few extra seconds compared to JPEG compression. The file size savings are worth the wait.

How it works

  1. Upload your image: Add any image — JPEG, PNG, WebP, HEIC, BMP, or existing AVIF. MiniPx handles all common formats.
  2. Select AVIF output format: Choose AVIF from the format selector. This converts your image to AVIF or recompresses existing AVIF files.
  3. Adjust quality preset: Smart preset gives the best balance of quality and size. Use Gentle for maximum quality or Tiny for the smallest possible file.
  4. Download your AVIF image: Compare the before and after file sizes. AVIF typically produces files 30-50% smaller than the equivalent JPEG.

Frequently asked questions

What is AVIF and why should I use it?
AVIF (AV1 Image File Format) is an image format based on the AV1 video codec. It delivers the best compression efficiency of any widely-supported format — 30-50% smaller than JPEG at the same visual quality. All major browsers support it as of 2026, making it safe for web use.
How does AVIF compare to WebP?
AVIF typically produces files 20-30% smaller than WebP at comparable visual quality. AVIF handles smooth gradients and detailed textures better than WebP, which can show slight blurring at aggressive compression levels. Both support transparency, but AVIF also supports HDR and wider colour gamuts.
How does AVIF compare to JPEG?
AVIF produces files 30-50% smaller than JPEG at the same visual quality. AVIF also supports transparency, lossless compression, and HDR — features JPEG lacks entirely. The only advantage JPEG has is universal compatibility with every device and application ever made.
Do all browsers support AVIF?
Yes, as of 2026. Chrome added support in version 85 (2020), Firefox in version 93 (2021), Safari in version 16.1 (2022), and Edge follows Chrome. Over 95% of global web traffic now comes from browsers that support AVIF natively.
Can I convert JPEG or PNG to AVIF?
Yes. Upload any JPEG, PNG, WebP, HEIC, BMP, or GIF to MiniPx, select AVIF as the output format, and download. The conversion and compression happen together — you get a smaller file in a more efficient format in one step.
Is AVIF good for screenshots and graphics?
AVIF works well for photographs but can struggle with very sharp text and thin lines at low quality settings. For text-heavy screenshots, either use a higher quality preset or stick with PNG. For photographs, illustrations, and mixed content, AVIF is the best choice available.
Does AVIF support transparency?
Yes. AVIF supports full alpha channel transparency with both lossy and lossless compression. This makes it a direct replacement for PNG in cases where you need transparency but also want small file sizes — something PNG cannot offer with photographs.
Why is AVIF encoding slower than JPEG?
AVIF uses more complex compression algorithms derived from the AV1 video codec. This complexity is what produces smaller files, but it requires more computation. On MiniPx, the encoding runs locally on your CPU and typically completes in 1-3 seconds for standard images. Very large images may take a few seconds longer.

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