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PNG

定义 Definition

PNG（Portable Network Graphics，便携式网络图形）是一种常见的位图图像文件格式，特点是无损压缩，并支持透明通道（alpha），常用于网页图形、图标、截图等。

例句 Examples

Save the image as a PNG.
把这张图片保存为 PNG 格式。

Because PNG supports lossless compression and transparency, we used it for the app’s icons.
因为 PNG 支持无损压缩和透明效果，我们用它来制作应用的图标。

发音 Pronunciation

/pi.ndi/

词源 Etymology

PNG 是缩写，来自 Portable Network Graphics。它在 1990 年代被提出，作为对 GIF 格式在专利争议背景下的替代方案之一，并逐渐成为网络与界面设计中常用的图像格式。

相关词 Related Words

文学与作品举例 Literary Works

PNG: The Definitive Guide（O’Reilly Media）
HTML and CSS: Design and Build Websites（Jon Duckett）
Computer Graphics: Principles and Practice（Foley, van Dam 等）

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