Convert PNG images to AVIF locally. Free, private, runs in your browser.
100% private — your files and text never leave your browser. All processing happens locally on your device.
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PNG to AVIF is helpful for reducing large photographic PNGs, marketing graphics, and mixed-content images intended for modern browsers. Everything runs in the current browser tab.
Transparent PNGs are encoded from RGBA pixels, so alpha is preserved when the browser or bundled local WASM encoder can complete the export within local memory limits.
Large PNGs can be downscaled with optional max-width and max-height settings before AVIF encoding. That makes the result lighter and protects browser memory.
Yes. The native browser path and bundled local WASM fallback both encode from RGBA pixels, so transparency is preserved when the output can be generated within local memory limits.
AVIF can make photographic or mixed-content PNGs much smaller for modern web delivery while keeping good visual quality.
This Phase 3 tool uses quality-based browser AVIF encoding. It is practical for web images, not a guaranteed lossless archival conversion.
Optional max dimensions let you downscale large PNGs before AVIF export, which can reduce file size and browser memory use.
No. The PNG is decoded and encoded locally in your browser tab, including the WASM fallback path.