有需要转换为JPG/JPEG formatBMP格式的图像吗？有许多不同的方法可以在不同的图像格式之间进行转换，在这篇文章中，我将提到我所知道的最简单和最简单的方法。
如今，您不会真正看到那么多BMP 或位图(BMP or Bitmap)格式的图像，因为它没有针对具有混合或渐变的彩色图像进行优化。BMP是一种非常古老的格式，是Windows XP中画图(Paint)的默认文件格式(default file format)。从技术上讲，它是无损的，但几乎没有压缩。
无损意味着可以使图像更小，但不会损失任何质量。但是，由于BMP 没有(BMP doesn)任何压缩功能，因此文件大小非常庞大。一张只有几种颜色的简单图像在BMP 格式中可能有数百 KB，但在(BMP format)JPEG 格式(JPEG format)中只有 2 到 3 KB 。这就是为什么BMP在网络上几乎不再使用的原因。
(JPEG)另一方面，JPEG是一种具有高压缩率的有损格式。这意味着文件大小会小得多，但每次保存文件都会降低质量。JPEG 格式(JPEG format)非常适合详细的彩色照片(color photographs)，但不适合徽标和简单的线条图。这就是为什么大多数徽标都以GIF 格式(GIF format)保存的原因。
最后，BMP 和 JPEG(BMP and JPEG)都支持多达 1600 万种颜色，因此任何从BMP转换为JPEG的图像看起来应该几乎完全相同。无论如何(Anyway)，既然您对这两种图像格式有了一些了解，那么我们来谈谈将BMP转换为JPEG。
微软油漆
只要您还没有使用Windows XP（而且您不应该使用），那么您可以使用Microsoft Paint打开BMP 文件(BMP file)并快速将其保存为JPG 文件(JPG file)。
打开画图(Paint)，然后打开您的BMP 文件(BMP file)。接下来(Next)，单击文件(File)，然后单击另存为(Save As)。在具有功能区界面(ribbon interface)的较新版本的Paint中，单击小菜单图标。
在Save as type下拉菜单中，选择JPEG作为文件格式(file format)。这就是将BMP(BMP)转换为JPG 格式(JPG format)所需要做的所有事情。
如果您碰巧使用未安装Paint的(Paint)计算机或设备(computer or device)，那么还有其他选项，我将在下面提到。
在线图像转换
如果您更喜欢使用在线工具进行转换，有几个不错的选择。幸运的是，我已经写过关于使用两种流行的在线工具在不同文件格式之间进行转换的文章：Zamzar.com 和 Online-Convert.com(Zamzar.com and Online-Convert.com)。
这些站点允许您在数百种不同的格式之间进行转换，但在我们的例子中，我们只需要在两种图像格式之间进行转换。
我更喜欢online-convert.com，因为它为您提供了很多选择。您可以从计算机中选择文件、粘贴URL甚至从Dropbox中获取图像。您还可以选择JPEG 文件(JPEG file)的质量设置、更改大小、更改颜色、增强图像和更改DPI。
只需单击转换文件(Convert file)，几秒钟后，JPEG 文件(JPEG file)的下载将自动开始。ZamZar也易于使用，但您必须向他们提供您的电子邮件地址(email address)，然后他们会将文件通过电子邮件发送给您。通常(Normally)它工作得很好，但在某些情况下，您直到几个小时后才收到电子邮件或根本没有收到任何电子邮件。
第三方免费软件
如果您正在寻找将BMP转换为JPG的免费软件程序，您还有多种选择。Easy2Convert有一个专门为这种类型的转换编写的小型免费软件程序。(freeware program)
免费软件版本允许您选择一个BMP 文件(BMP file)、输出文件夹(output folder)并调整图像质量(image quality)。他们还有一个PRO 版本(PRO version)，可让您将BMP批量转换为JPG，但这是 20 美元，可能不值得，除非这是您一直在做的事情。
免费软件程序(freeware program)还内置了命令行支持(command line support)，所以如果您熟悉使用命令行(command line)，您可以创建一个批处理脚本(batch script)来一次批量转换多个文件。
如果这对您不起作用(t work)，请查看BMP to JPG Converter，这是另一个具有一些非常好的功能的免费软件。首先，它可以让您免费批量转换，这很好(s good)。第二个有用的功能是能够扫描文件夹及其所有子文件夹以查找BMP文件。
如果您有一个包含一堆不同类型文件的文件夹并且您不想手动将它们全部移动到单独的目录中，这将证明非常有用。您还可以选择JPEG 输出(JPEG output)的质量，然后单击“开始(Start)”开始转换过程。
这些是您可以从BMP转换为JPG 格式(JPG format)的所有不同方式，而无需太多麻烦或花费(trouble or spending)任何金钱。如果您有任何问题，请发表评论。享受！
Best Free Ways to Convert BMP to JPG
Have an image in BMP format that you need to convert to JPG/JPEG format? There are many different wаys you сan convert between different image formats and in this post I’ll mention the simplest and easiest ways that I know of.
These days you won’t really see as many images in BMP or Bitmap format because it’s not optimized for colored images that have blends or gradients. BMP is a really old format and was the default file format for Paint in Windows XP. In technical terms, it is lossless, but has pretty much no compression.
Lossless means that an image can be made smaller, but without any loss of quality. However, since BMP doesn’t have any compression, file sizes are enormous. A simple image with only a few colors can be hundreds of kilobytes in BMP format, but only 2 to 3 KB in JPEG format. That is why BMP is pretty much no longer used anywhere on the web.
JPEG, on the other hand, is a lossy format with high compression. This means the file sizes will be much smaller, but there will be a loss of quality each time the file is saved. JPEG format is great for detailed color photographs, but bad for logos and simple line drawings. That’s why most logos are saved in GIF format.
Lastly, BMP and JPEG both support up to 16 million colors, so any image you convert from BMP to JPEG should look almost exactly the same. Anyway, now that you know a little bit about the two image formats, let’s talk about converting BMP to JPEG.
Microsoft Paint
As long as you’re still not using Windows XP (and you shouldn’t be), then you can use Microsoft Paint to open the BMP file and quickly save it as a JPG file.
Open Paint and then open your BMP file. Next, click on File and then Save As. In newer version of Paint that have the ribbon interface, click on the little menu icon.
In the Save as type dropdown, go ahead and choose JPEG as the file format. That is literally all you have to do to convert the BMP to JPG format.
If you happen to be using a computer or device that doesn’t have Paint installed, then there are other options, which I mention below.
Online Image Conversion
If you prefer to use an online tool for conversion, there are a couple of good options. Luckily, I’ve already written about converting between different file formats using two popular online tools: Zamzar.com and Online-Convert.com.
These sites let you convert between hundreds of different formats, but in our case, we only need to convert between two image formats.
I like online-convert.com better because it gives you a lot of options. You can pick a file from your computer, paste in a URL or even grab an image from Dropbox. You can also choose the quality settings for the JPEG file, change the size, change the color, enhance the image and change the DPI.
Just click Convert file and after a few seconds, a download of the JPEG file will start automatically. ZamZar is also easy to use, but you have to give them your email address and they will then email you the file. Normally it works just fine, but there are some occasions when you don’t get an email until a couple of hours later or any email at all.
Third-Party Freeware
If you’re looking for a freeware program to convert BMP to JPG, you also have several options. Easy2Convert has a small freeware program that was written specifically for this type of conversion.
The freeware version lets you choose one BMP file, the output folder and adjust the image quality. They also have a PRO version that lets you batch convert BMP to JPG, but that’s $20 and probably not worth it unless this is something you do all the time.
The freeware program also has built-in command line support, so if you are familiar with using the command line, you can create a batch script to batch convert many files at once.
If that doesn’t work for you, then check out BMP to JPG Converter, which is another freeware that has some really nice features. Firstly, it lets you batch convert for free, so that’s good. The second useful feature is the ability to scan a folder and all of its subfolders for BMP files.
This can prove really useful if you have a folder with a bunch of different types of files and you don’t want to move them all to separate directory manually. You can also choose the quality for the JPEG output and then click Start to begin the conversion process.
Those are about all the different ways you can get from BMP to JPG format without too much trouble or spending any money. If you have any questions, post a comment. Enjoy!
