PNG vs WebP
PNG vs WebP compared — compression, transparency, browser support and file size, with a free WebP converter and compressor.
PNG is the long-standing lossless format with universal support; WebP is a modern format that delivers similar quality at much smaller sizes, with both lossy and lossless modes plus transparency.
PNG vs WebP at a glance
| PNG | WebP | |
|---|---|---|
| Compression | Lossless only | Lossy + lossless |
| File size | Larger | ~25-35% smaller |
| Transparency | Yes | Yes |
| Support | Universal | All modern browsers |
When to use PNG
Choose PNG for maximum compatibility or when an exact lossless copy is required.
When to use WebP
Choose WebP for the web — smaller files and faster pages, with a PNG fallback if you need legacy support.
Tools for PNG & WebP
PNG vs WebP
什么样的质量级别算是"足够好"？
对于网页用途，75%–85% 通常在肉眼看来与原图几乎无异，但文件体积只有原来的一小部分。建议针对你自己的图片和显示设备多做几次尝试。
为什么 PNG 输出不受质量滑块影响？
PNG 是无损压缩格式，质量始终固定在 100%。如果想调节压缩程度，请改用 JPG 或 WebP。
这个工具和 TinyPNG / Squoosh 相比如何？
Squoosh 拥有更先进的编码器（MozJPEG、libwebp），如果需要极致的压缩效果，建议使用 Squoosh。本工具则更注重简洁易用，且不依赖外部服务。