buncha/image/webp-to-avif

WebP to AVIF

WebP to AVIF Converter

Already shipping WebP and want to squeeze out more bytes? Convert WebP to AVIF and save another 20-30% at the same visual quality. Runs in your browser, batch-friendly.

Bulk Image Converter

Convert images between JPG, PNG, WebP, AVIF, BMP, and HEIC. Up to 100 files at once. All processing happens in your browser — your files are never uploaded.

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Drop images here or click to select

Files are processed in your browser. Nothing uploaded.

Need more than a format change?

Open the result in the buncha editor

Crop & resize Filter, curves, HSL Watermark AI bg remove, magic erase

Why convert WebP to AVIF?

WebP cut your image weight by 25-35% over JPG. AVIF cuts it by another 20-30% over WebP. For sites chasing Lighthouse / Core Web Vitals or anyone paying for CDN bandwidth by the gigabyte, the migration is a real lever. Every modern browser renders AVIF natively, so for web assets the conversion is essentially free quality-for-bytes.

Don't convert when the asset has to leave the web — older email clients, Microsoft Office, plenty of corporate uploaders, and most third-party design tools still don't handle AVIF reliably. Keep WebP (or even JPG) as the fallback for those workflows.

How to convert WebP to AVIF

Drop your WebP files into the upload area above
Pick a quality preset if avif supports it
Click Convert — every file processes locally on your device
Download a single file or a ZIP of the lot

Are my files uploaded anywhere?

No. Conversion runs in your browser using JavaScript and the Canvas API. Your files never leave your device. You can disconnect from the internet after this page loads and the tool will still work — try it and see.

Looking for something else? convert WebP to JPG if you need universal compatibility.

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About WebP to AVIF

Convert WebP images to AVIF for the web — typically 20-30% smaller at the same quality. Free, runs in your browser.

Like every tool on Buncha, this one runs entirely in your browser. There's no upload, no log, no record of what you've pasted or generated. Close the tab and the data is gone.

↳ Have feedback or found a bug? hello@buncha.tools