Why compress PNG images?
PNG images often contain unnecessary metadata and can be compressed further without visible quality loss. Our lossy mode reduces colors intelligently, while lossless mode strips hidden data. Both modes preserve transparency — essential for logos, icons, and web graphics.
Khi nào nên dùng PNG so với JPEG và WebP
- JPEG: Best for photographs. Smaller files but no transparency support.
- WebP: Modern format supporting both lossy and lossless with transparency. Smaller than PNG and JPEG in most cases.
- PNG: Best for graphics with transparency, text, logos, screenshots, and images requiring perfect clarity.
Giải thích về nén PNG
PNG uses DEFLATE lossless compression. Our lossy mode reduces the color palette (quantization) before PNG encoding, dramatically shrinking files. Không mất dữ liệu mode re-encodes the PNG with optimized compression settings, stripping unnecessary metadata.