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转换工具 / 图像 / JPEG

转换JPEG

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选择文件 转换成 .jpeg
将文件夹移动到此处

您可以使用免费的在线转换器将图片和照片转换成JPEG格式。

如何转换 于 jpeg
第一步

下载 文件

从你电脑、Google云端硬盘、Dropbox中选择你想要的文件或将文件夹移动到此页
第二步

选择 «于 jpeg»

选择 jpeg 或您需要的任何其他格式 (支持包含超过 100 种常用文件格式)
第三步

下载你的 jpeg 文件

等到你的文件转换成你想要的格式后,就能下载 jpeg -文件

在线和自由jpeg转换器

方便快捷
刚落,在网页上的jpeg文件,你可以将其转换为超过250种不同的文件格式,无需注册,给人以电子邮件或水印。
不要担心安全问题。
我们删除即时上传jpeg文件,并在24小时后转换的文件。所有的文件传输与SSL加密保护的先进水平。
所有的云
你不需要安装任何软件。所有jpeg的转换使在云中,不使用计算机的任何资源。
Joint Photographic Experts Group
文件扩展名 .jpeg
电子 images
描述|介绍 JPEG – is a popular graphic format, which is characterized by a high degree of compression, which leads to a decrease in image quality. It uses the technology of encoding of smooth color renditions, providing the ability to reduce the amount of data frequently during the recording of the image. Because of the small size it is requested by the owners of websites, allowing you to save the traffic effectively. It is also frequently used in memory cards of digital video cameras. The JPEG algorithm is optimally suitable for compressing photographs and pictures, in which realistic scenes with little contrast of colors are present. It is not recommended to use this format for compression of drawings and various kinds of graphics, since a strong contrast between a number of closely located pixels provokes the appearance of visible artifacts.
技术细节 The procedure for compressing the digital images in JPEG format is carried out in several stages. First, the photo is transformed into a color space YCbCr, then it is divided into squares to determine the upper range of the color spectrum. Finally, the colors and brightness are coded. JPEG uses a "lossy" compression system and discrete cosine transform technology. The format acts simultaneously as the standard of ISO and the International Telecommunication Union. The file compression ratio is in the range from 10:1 to 100:1. In this case, the reduction in image quality can vary from insignificant to substantial.
程序
Adobe Photoshop
Apple Preview
Corel Paint Shop Pro
主程序 MS Paint
开发公司 The JPEG Committee
MIME type
image/jpeg

FAQ

❓我如何转换jpeg?
首先,选择jpeg要转换或拖动文件,并删除它。其次,选择您想要将文件转换为一种格式。然后单击转换,等待你的文件转换
⏳我需要等多久转换jpeg?
图像转化通常需要几秒钟。您可以转换jpeg非常快。
🛡️是否安全转换jpeg上OnlineConvertFree?
当然!我们删除您上传和转换的文件,所以没有人可以访问您的信息。所有上OnlineConvertFree类型的转换(包括jpeg)为100%安全的。
📱我可以转换jpeg无需安装软件?
绝对! OnlineConvertFree不需要安装。你可以在网上将您的电脑或手机上的任何文件(包括jpeg)。