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Rebytify Rebytify
Free · Private · Browser-based

Bulk WebP to AVIF Converter

Batch-convert WebP images at once, free, with no signup, entirely in-browser-no upload. Use it as a browser based AVIF converter when you are stepping up from WebP across many assets without sending files to a server. AVIF is the next step up from WebP, offering 20-30% better compression at equivalent quality. If you are already using WebP, converting to AVIF yields additional file size savings - particularly valuable for high-traffic websites where every kilobyte counts. AVIF also supports HDR and wide-colour-gamut images, which WebP does not. A practical strategy: serve AVIF to supported browsers and WebP as a fallback.

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PNG, JPG, WebP, AVIF, HEIC · Larger batches may take longer to process

Target size

Output format

WebPAVIF·Conversion happens entirely in your browser

Other conversions

Frequently asked questions

Is AVIF meaningfully better than WebP?
In most cases yes - AVIF typically achieves 20-30% smaller files than WebP at equivalent visual quality, and handles gradients and complex textures better. The trade-off is slower encoding time.
Can I use AVIF with a WebP fallback?
Yes - this is the recommended approach. Use the HTML <picture> element: offer AVIF first, WebP second, then JPG for maximum compatibility. Most modern web frameworks and CDNs can automate this.
Does AVIF support transparency like WebP?
Yes - AVIF supports full alpha transparency. Converting a WebP with transparent areas to AVIF preserves the transparency completely.