Converting PNG to AVIF produces dramatically smaller files while preserving alpha, high bit-depth, and wide color. Lossless AVIF is typically 20–40% smaller than PNG; lossy AVIF at high quality can be 70–85% smaller with no visible difference.
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AVIF encoding is slow; expect seconds per image, not milliseconds. The file size gains are the largest of any mainstream image format. Lossy AVIF can introduce smoothing on fine detail or text at low quality settings; keep quality at 60+ for text-heavy images.
AVIF works in Chrome 85+, Firefox 93+, Safari 16+, and modern Edge. Native OS support on macOS and iOS. Image editor support is improving: Photoshop, Affinity, and GIMP all handle AVIF now.
PNG is a lossless image format designed to replace GIF. It uses DEFLATE compression, supports an 8-bit alpha channel for full transparency, and preserves every pixel exactly. PNG excels at images with sharp edges, large flat-color regions, text, UI screenshots, and anything you'll re-edit.
AVIF is an image format built on the AV1 video codec, standardized in 2019. It supports HDR, wide color gamut, 12-bit depth, alpha, and animation. At matched perceived quality it's typically 50% the size of JPG and 20% smaller than WebP. Support is near-universal in modern browsers but spottier in image editors.
Yes for web delivery: files are 20–40% smaller with identical pixels. For desktop archival, PNG is simpler and encodes instantly; AVIF's slow encode may not be worth it.
Yes. AVIF supports full 8-bit, 10-bit, and 12-bit alpha channels. Transparent regions in the PNG transfer cleanly.
PNG is a lossless image format designed to replace GIF. It uses DEFLATE compression, supports an 8-bit alpha channel for full transparency, and preserves every pixel exactly. PNG excels at images with sharp edges, large flat-color regions, text, UI screenshots, and anything you'll re-edit.
AVIF is an image format built on the AV1 video codec, standardized in 2019. It supports HDR, wide color gamut, 12-bit depth, alpha, and animation. At matched perceived quality it's typically 50% the size of JPG and 20% smaller than WebP. Support is near-universal in modern browsers but spottier in image editors.
Yes. The converter runs entirely in your browser using WebAssembly. Your images are never uploaded, never sent to a server, and never leave your device.
There's no hard limit, but because everything runs in your browser you're bounded by available memory. Very large images (over a few hundred megapixels) can hit browser memory limits. Process in smaller batches if you run into issues.