Are my images uploaded?

No. Decoding and encoding use your browser's built-in image pipeline — nothing leaves the device.

Why is AVIF encoding unavailable?

Not every browser can encode AVIF from a canvas. Recent Chrome and Firefox can; if yours cannot, the tool tells you and you can pick WebP instead.

How much smaller is AVIF?

Typically 30–50% smaller than a comparable-quality JPEG, and often better than WebP.

Does AVIF keep transparency?

Yes, AVIF supports an alpha channel, so transparent PNGs convert cleanly.

Does it work offline and on mobile?

Yes. Once the page has loaded it keeps working without a network connection, and the layout is responsive so it stays usable on phones and tablets.

AVIF Converter

Convert images to and from AVIF with quality control.

Support

Works Offline

Privacy First

No Login

No API

Canvas

File API

Blob

Source images

Convert to

Quality — 90%

Drop a file here

Drop PNG, JPG, WebP or AVIF files — encoding happens locally

Converted images

Drop one or more images to convert them. Everything runs in your browser.

About the AVIF Converter

Batch-convert PNG, JPG, WebP and GIF images into AVIF for much smaller files, or decode existing AVIF images back to JPG, PNG or WebP. Quality is adjustable, sizes before and after are shown per file, and the tool checks whether your browser supports AVIF encoding before running.

Examples

Shrink a hero image

hero.png 1.8 MB

Output

hero.avif around 220 KB

Keyboard shortcuts

Copy the main outputCtrl / ⌘ + Shift + C
Download the resultCtrl / ⌘ + S
Share this toolCtrl / ⌘ + Shift + S
Reset the inputsAlt + R
Open the tool search paletteCtrl / ⌘ + K

Related tools

Base64 Image Encoder

Images

Convert images to Base64 data URLs and back again.

HEIC to JPG / PNG Converter

Images

Convert iPhone HEIC/HEIF photos to JPG or PNG in your browser.

Image Format Converter

Images

Convert images between PNG, JPEG, and WebP in your browser.

Image to ASCII Art

Images

Convert any image into ASCII text art in your browser.

Image to SVG Vectorizer

Images

Trace PNG or JPG images into clean, scalable SVG paths.

Signature Maker

Images

Draw or type a signature and export a transparent PNG.

Frequently asked questions

Version 1.0.0 · Updated 2026-08-26 · Runs entirely in your browser