What is PNG?
PNG (Portable Network Graphics) is a lossless raster format supporting full alpha transparency, created by the W3C in 1996. It is universally supported but produces relatively large files compared to modern formats, especially for photographs and complex images.
What is AVIF?
AVIF (AV1 Image File Format) is a next-generation image format standardized by the Alliance for Open Media. It uses the AV1 video codec for image compression, achieving significantly better compression ratios than PNG, JPEG, and even WebP while supporting transparency, HDR, and wide color gamuts.
Why Convert PNG to AVIF?
Converting PNG to AVIF reduces file sizes by 30-50% or more while maintaining visual quality and transparency. This translates directly to faster page loads, lower bandwidth costs, and improved Core Web Vitals scores. AVIF is now supported by all major browsers, making it a practical choice for web images.
Key Differences Between PNG and AVIF
PNG uses lossless DEFLATE compression and is universally compatible; AVIF uses AV1-based compression that can be lossy or lossless with dramatically smaller files. Both support transparency. AVIF also supports HDR and wide color gamut. The trade-off is slightly less universal tool support in exchange for significant bandwidth savings.
