gif 格式完整检查_GIF的完整格式是什么？

gif 格式完整检查

GIF：图形交换格式 (GIF: Graphics Interchange Format)

GIF is an abbreviation of Graphics Interchange Format. It is extensively used for animations and still images on the World Wide Web. The image is set out is bitmap image and it consists of a file extension .gif. In 1987, It was launched by CompuServe. The chief idea behind its development is to create an image format that is independent of the platform. Lempel-Ziv-Welch (LZW) lossless data compression method is used to compress GIF images. This method is used to diminish the size of the file without lowering the standard of the image.

GIF是Graphics Interchange Format的缩写 。它被广泛用于万维网上的动画和静止图像。该图像是位图图像，由文件扩展名.gif组成。 1987年，它由CompuServe推出。其开发背后的主要思想是创建独立于平台的图像格式。 Lempel-Ziv-Welch(LZW)无损数据压缩方法用于压缩GIF图像。此方法用于减小文件的大小而不会降低图像的标准。

The 8-bit format is used in GIF images which keep up with 256 colors. To make new colors, these 256 colors cannot be mixed. It is in-demand on the internet because of its small size and transportability and manageability specifications. It is contemplated prime for line art with a limited amount of colors, images with huge flat regions of color and images that require being high- spirited or animated.

8位格式用于保持256色的GIF图像。为了产生新的颜色，不能混合这256种颜色。由于其体积小，可传输性和可管理性规格，它在Internet上很受欢迎。对于有限数量的颜色的线条艺术，具有巨大的平坦颜色区域的图像以及需要高昂的精神或生气勃勃的图像，可以考虑使用这种方法。

GIF版本 (Versions of GIF)

GIF categorized into two versions, which are given below,

GIF分为以下两个版本，

In 1987, the first version was launched as GIF87a.
1987年，第一个版本发布为GIF87a。
In 1989, the second version which was called GIF89a came into existence which was an extended version of the first version. It is used as a standard format till today.
1989年，第二个版本GIF89a出现了，它是第一个版本的扩展版本。直到今天，它仍是标准格式。

用法 (Usage)

GIFs are appropriate with a limited amount of colors for sharp-edged line art such as a logo.
GIF适用于颜色有限的颜色，用于徽标等锐利的线条艺术。
LZW technique is used for data compression so there is no sign of agitation of data loss and it supports flat regions of constant color with effectively stated edges.
LZW技术用于数据压缩，因此不会出现数据丢失的迹象，它支持具有有效边缘的恒定颜色的平坦区域。
In small animations and low-resolution clips of film, it can be used.
在小型动画和低分辨率的影片剪辑中，可以使用它。
In games, it can be used.
在游戏中，可以使用它。
To merge GIF files with website background colors, it favors transparent backgrounds to be used.
要将GIF文件与网站背景颜色合并，它倾向于使用透明背景。

优点 (Advantages)

As compared with other file formats, one of the prime benefits of using animated gifs is the size which can be comparatively smaller.
与其他文件格式相比，使用动画gif的主要好处之一是尺寸可以相对较小。
It helps in giving a highly professional look to a specific website having animation over a diverse background.
它有助于为具有不同背景动画的特定网站提供高度专业的外观。
It can display movements and emotions that can’t be feasible for a well-organized image.
它可以显示对于组织良好的图像而言不可行的动作和情感。

缺点 (Disadvantages)

Due to its limited color pattern, in comparison to other image files the animated images designed can sometimes look poorer.
由于其有限的颜色模式，与其他图像文件相比，设计的动画图像有时看起来更差。
Once the animation has already been coded into the authentic gif file, it cannot be edited.
一旦将动画编码为真实的gif文件，就无法对其进行编辑。
It will end up showing a less prudent version of that file because the images will not load immediately when the connection lags a bit.
最终将显示该文件的较不谨慎的版本，因为当连接滞后一点时，图像将不会立即加载。