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Image to AVIF

Free online tool to convert JPG, PNG, WebP, GIF, BMP, SVG, and other images to AVIF locally in your browser

Image conversion

Format routeAVIF
Input formats
JPGPNGWebPGIFBMPSVGAVIF
Output formatAVIF
Files0 files selected
Done0 results ready
82%

Higher quality usually creates a larger file

Local Worker first. Files are not uploaded.

Converted images

Waiting for images

Batch upload is supported. Download files one by one or all converted results at once.

About this tool

AVIF uses AV1 image coding for high compression efficiency and modern web delivery, with capabilities including lossy or lossless coding, high dynamic range, and transparency. Photographs and complex gradients can be smaller than JPG or WebP at suitable settings, although encoding is usually slower.

The tool encodes a static image as AVIF when browser capability allows. Support varies more across browsers, operating systems, and older creative software than it does for JPG or PNG, so AVIF works best as an optimized web source with a compatible fallback retained.

How to use it

  1. Upload a static image

    Confirm the source quality and final display dimensions so encoding is not spent on unused pixels.

  2. Choose quality and convert

    Start in the medium-to-high range and allow extra time for a large source.

  3. Check quality and support

    Inspect fine texture and gradients, then open the file in the actual target browser or application.

Supported range and limits

Input formats
JPG, PNG, WebP, GIF, BMP, SVG; anything the browser can decode
Size
Usually smaller again than WebP at matching quality; the smallest of the mainstream formats today
Encoding time
Noticeably slower than JPG or WebP; expect a wait on large images or batches
Compatibility
Widely supported in modern browsers, but older browsers, some design software and OS previews still cannot open it
Transparency and bit depth
Supports alpha and 10-bit colour, so gradients band less than in 8-bit formats
When to use it
Good for controlled web delivery; risky as a general-purpose file you hand to someone else

When you would use it

  • Building modern web assets

    Serve a smaller AVIF to capable browsers while retaining WebP or JPG as a fallback.

  • Compressing a high-resolution photo

    Reduce transfer size for a gallery or article hero where the encoding time is acceptable.

  • Delivering the smallest possible web images

    Where bandwidth matters, AVIF typically undercuts WebP at matching quality, which suits large above-the-fold images.

What to know before you start

  • AVIF encoding can be much slower than JPG or WebP, so watch device memory and response time with very large images.
  • Not every source becomes smaller. Compare formats at equally acceptable visual quality, not at matching numeric quality values.
  • Before publishing to a third-party platform, confirm that it will not reject, mishandle, or strip the AVIF file.

Related concepts

AVIF
An image file format based on AV1 coding technology and designed for high compression efficiency.
fallback
A compatible alternative resource used when the preferred format is unsupported.

Frequently asked questions

Does Image to AVIF upload my files?
No. Images are converted locally in your browser with Canvas or a Worker. Files are not uploaded to a server.
What is AVIF good for?
AVIF often keeps strong visual quality at smaller file sizes, making it useful for web images, cover images, thumbnails, and image assets that need extra compression.
Which images can be converted to AVIF?
JPG, PNG, WebP, GIF, BMP, SVG, AVIF, and other common browser-decodable image formats are supported.
Does AVIF conversion have browser limits?
AVIF encoding depends on browser support. If your browser cannot export AVIF, the page shows an unsupported output message. Use a recent Chrome, Edge, or Firefox release.
Why is encoding so slow?
AVIF encoding is far more computationally demanding than JPG or WebP; that is what buys the smaller file. Expect a wait on large images or batches, especially on modest hardware.
The AVIF I sent will not open for someone; why?
Browser support is broad, but many design applications, OS previews and chat clients still cannot read it. AVIF suits web delivery where you control the environment; for a file someone else must open, send JPG or PNG.

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