What is WebP and why should I use it?

WebP is a modern image format developed by Google that provides superior compression. A WebP image is typically 25–34% smaller than a comparable JPEG or PNG while maintaining the same visual quality. Most modern browsers and CMSs support it.

What is AVIF and how does it compare to WebP?

AVIF (AV1 Image File Format) is an even newer format that can achieve 50% smaller file sizes compared to JPEG at equivalent quality. Browser support is still growing — Chrome, Firefox, and Safari 16+ support it, but older browsers do not.

Are my images uploaded to your server?

No. All conversion is performed using the HTML5 Canvas API directly in your browser. Your images never leave your device.

What input formats are supported?

You can convert JPG, JPEG, PNG, and WebP images. The tool loads each image onto a canvas and exports it in your chosen format.

Why is AVIF greyed out?

AVIF encoding requires a browser that supports it. If the option is disabled, your browser does not support AVIF output via the Canvas API. Try Chrome or Edge for full AVIF support.

Will conversion affect image resolution?

No. The canvas preserves the original pixel dimensions. Only the file format and compression are changed.

WebP & AVIF Converter

Convert images to next-gen formats (WebP, AVIF) or back to PNG. Instant, private, free.

Output

Quality: 85%

Drop images here

JPG, PNG, WebP · Multiple files at once

Convert Images to WebP & AVIF Instantly

WebP and AVIF are next-generation image formats that deliver significantly smaller file sizes than JPG and PNG at comparable quality. Zolkit's converter runs entirely in your browser — nothing is ever uploaded.

100% Private

All conversion happens locally in your browser using the HTML5 Canvas API. Your images are never sent to any server.

Batch Convert

Drop multiple images and convert them all at once. Download individually or as a single ZIP archive.

Multiple Formats

Convert between JPG, PNG, WebP, and AVIF. Output to any modern format your workflow requires.

Quality Control

Fine-tune WebP and AVIF output quality with a slider. PNG output is always lossless.

Free Forever

No account, no signup, no watermarks. Zolkit is free to use.

Instant Results

Conversion happens in milliseconds using your device's native GPU-accelerated canvas pipeline.

How to Convert Images to WebP or AVIF

1
Drop your JPG, PNG, or WebP images into the upload area, or click to select files.
2
Choose your output format: WebP for broad compatibility, AVIF for maximum compression, PNG for lossless.
3
Adjust the quality slider as needed (not applicable for PNG), then click Download.