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Rebytify Rebytify
Free · Private · Browser-based

Bulk PNG to AVIF Converter

Batch-convert multiple PNGs at once-free, with no signup, entirely in-browser with no upload. When you want a browser based AVIF converter for whole folders-not a single file at a time-drop your images and process them together. AVIF (AV1 Image File Format) offers the best compression ratios of any widely-supported format today. Compared to PNG, AVIF can be 50-60% smaller with no perceptible quality loss, and it supports full alpha transparency. AVIF is backed by Netflix, Google, and the Alliance for Open Media. Browser support covers Chrome 85+, Firefox 93+, and Safari 16+ - well over 90% of global web traffic.

Drop images here

or browse files

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

Target size

Output format

PNG→AVIF·Conversion happens entirely in your browser

Other conversions

PNG to JPGPNG to WebPJPG to PNGJPG to WebPJPG to AVIFWebP to PNGWebP to JPGWebP to AVIFAVIF to PNGAVIF to JPGAVIF to WebPHEIC to PNGHEIC to JPGHEIC to WebPHEIC to AVIF

Frequently asked questions

What makes AVIF better than PNG for the web?
AVIF is based on the AV1 video codec's intra-frame encoding, achieving dramatically better compression - often 50%+ smaller than PNG - while supporting transparency, HDR colour, and wide colour gamuts. The trade-off is slower encoding compared to PNG.
Does AVIF support transparency?
Yes - AVIF supports alpha transparency. You can convert logos, icons, and cutout images to AVIF without losing the transparent background.
How widely supported is AVIF in browsers?
AVIF is supported in Chrome 85+, Firefox 93+, Safari 16+, and Edge 121+. Roughly 90%+ of global web users are on a supported browser. For the remainder, serve a WebP or PNG fallback using the <picture> element.