Convert PNG to AVIF with alpha channel preserved. AVIF produces files roughly 50% smaller than WebP for the same content — the most efficient modern format for web publishing.
The output uses the same production-grade encoder pipeline as our dedicated Convert to AVIF tool: MozJPEG's trellis multipass for JPEG, oxipng at max effort for PNG, sharp-YUV libwebp for WebP, and SSIM-tuned libavif for AVIF. Files are optimized to be measurably smaller than what most online converters produce at the same quality setting.
Why convert PNG to AVIF?
Convert PNG to AVIF with alpha channel preserved. AVIF produces files roughly 50% smaller than WebP for the same content — the most efficient modern format for web publishing.
Common reasons to use AVIF instead of PNG: Modern web publishing, alpha preservation, hero graphics.
How the conversion works
Your PNG file is decoded in your browser using WebAssembly codecs (no upload, no server processing), then re-encoded as AVIF using our production-grade encoder pipeline. The full round-trip typically completes in under a second per file on modern hardware. Nothing about your file is logged, cached, or transmitted anywhere.
Batch, privacy, and downloads
Drop up to 20 PNG files at once. Each file shows a preview, its before/after size, and a per-file download button. Hit "Download all" to get a single ZIP archive of all converted AVIF files. Filenames preserve the original name and swap the extension automatically.