在这篇文章中，我们将讨论适用于 Windows 10 的最佳免费图像压缩器和优化器软件(best free image compressor & optimizer software for Windows 10)。图像压缩可以方便地减小图像的大小（例如从 1 MB 到 300 KB），这进一步有助于节省磁盘空间。当您必须在社交网络上或与某人分享您的图像集时，它也可以派上用场。您可以生成具有压缩大小的原始图像的副本并在任何地方使用它。图像的宽度和高度没有改变，只是通过减少颜色数量或图像质量来减小文件大小。输出图像看起来与输入图像完全相同。您可以在任何照片查看器应用程序(photo viewer apps)或软件中打开压缩图像，您不会注意到任何变化。
(Image)适用于Windows 10的(Windows 10)图像压缩器和优化器软件
我们已经介绍了五种免费的图像优化软件。在使用任何这些软件之前，您还应该备份原始图像，以防万一：
- 海量图像压缩器
- 想象
- 铯
- 罗密欧之光 PNGmicro
- imagemin 应用程序。
1]海量图像压缩器
Mass Image Compressor 是开源(open-source)软件，它可以让您批量压缩(batch compress)图像文件。您可以添加包含JPG、PNG和RAW格式图像的文件夹并对其进行压缩。有一个滑块可用于设置图像质量。该软件还带有其他选项，例如仅在文件大小大于定义的大小时压缩图像，在界面中预览输出图像，设置输出宽度或保持与原始高度和宽度相同，以及将图像保存为PNG或JPEG或以原始格式。如果要转换RAW图像，则输出会自动设置为JPEG这是无法改变的。
在此处(here)下载此软件。在其界面上，使用浏览(Browse)图标添加图像文件夹。压缩所有(Compress Images of All Child Directories)子目录的图像选项也可以压缩子文件夹中的图像，但该选项会覆盖这些子文件夹中的原始图像。因此，您应该取消选中此选项。
之后，使用滑块(slider)设置图像质量。要保持输出图像的大小（高度 n 宽度）与原始图像相同，请选择New Dimension in %选项，并将其滑块设置为100%。继续这些步骤并使用可用按钮设置输出文件夹。
一切都完成后，按全部压缩(Compress All)按钮。它将一张一张地压缩图像并将其存储在输出文件夹中。您还可以在底部预览任何输出图像，还可以使用放大和缩小选项来预览图像。对于每张图像，预览部分还显示了前后大小和缩小百分比，这是一个很好的功能。
2]想象一下
Imagine 是一款跨平台、便携(portable)、开源的图像压缩软件。该软件带有一个整洁的现代界面。它还带来了批量图像压缩(bulk image compression)功能。我最喜欢的选项是您可以分别为每个单独的图像设置质量大小(set quality size for each individual image separately)。此外，您可以查看输入图像的大缩略图大小预览，并在一张照片中保存所有压缩图像或一张一张保存图像。
你可以在这里(here)下载。在其界面上，您可以拖放(drag n drop)图像（JPG 和 PNG）或使用添加(Add)按钮。之后，它将显示输入图像的预览，并使用默认设置自动压缩这些图像。对于每个图像，都有一个单独的滑块可用于压缩它。使用(Use)这些滑块压缩图像。如果需要，您还可以使用右上角的“设置”图标更改默认压缩选项。(Settings)
要保存压缩图像，请将鼠标光标悬停在保存(Save)按钮上。它将显示三个选项：Save and overwrite、Save with new name auto和Export to。您应该使用第三个选项来生成压缩图像的单独副本。
阅读(Read)：压缩图像的最佳免费在线工具(Best free online tools to compress images)。
3]铯
Cesium是另一种开源图像压缩软件，可以将图像大小减少多达90%。它支持JPG 、(JPG) PNG和(PNG)BMP格式(BMP)图像的批量压缩。(batch compression)您可以为JPG(JPG)图像设置质量级别，但对于PNG和BMP图像，它会自动调整质量级别。它还允许您选择是否要保留或删除压缩图像的 EXIF 数据(keep or remove EXIF data)。您可以通过访问此软件设置(Settings)菜单下的压缩(Compression)部分来做到这一点。
要压缩图像，请使用添加图片(Add Pictures)按钮或文件(File)菜单。之后，它将显示输入图像列表。该列表还显示其他信息，例如图像的新大小和原始大小、图像质量、路径等。在底部，您可以使用选项设置输出文件夹、图像质量（对于JPG）、调整输出图像大小或保留原始图像大小，等等。使用选项，然后按Compress!按钮。
所有压缩图像都存储在您设置的文件夹中。如果需要，您还可以在其界面的右侧预览原始图像和压缩图像。
4]罗密欧之光PNGmicro
Romeolight PNGmicro 可以批量压缩 PNG(bulk compress PNG)图像。它带有一个深色主题的界面，您可以在其中查看图像名称、新尺寸和优化尺寸，以及原始和压缩图像的路径。您还可以使用“设置”(Settings)图标（位于右上角）设置压缩系数或质量、输出文件夹、启用隔行扫描(interlaced)选项以压缩和保存多遍输出、为压缩图像添加透明效果等。
这个软件可以从这里(here)下载。它有便携式和安装程序版本。下载符合您要求的。之后，您可以在其界面上放置图像或使用添加文件(Add Files)按钮。
添加图像后，访问设置(Settings)以根据需要设置选项。最后，按“添加文件”(Add Files)按钮旁边的“优化(Optimize)”按钮以压缩和保存输出图像。
5] imagemin-应用程序
imagemin-app 是本文中最简单的图像压缩软件。这个开源和便携式软件没有任何设置(Settings)、质量因素或其他选项。眼前会出现一个空白界面，您可以在其中批量添加PNG图片(PNG images in bulk)进行压缩。
在这里(here)下载。当您打开其界面时，要么删除(drop a folder)包含PNG图像的文件夹，要么选择图像并删除它们。之后，它将自动处理这些图像。处理完成后，它会在输入图像所在的同一位置创建一个优化的名称文件夹，并将所有压缩的(optimized)PNG图像存储在该文件夹中。
如果您正在寻找类似的免费图像优化软件，您还可以查看：(If you are looking for similar free image optimization software, you can also check out:)
我希望这些免费的图像压缩器和优化器软件能帮助您轻松优化图像。我喜欢Imagine软件，因为它提供了单独的滑块来设置每个图像的质量。但是，其他软件也擅长提供预期的输出。
Best Image Compressor and Optimizer software for Windows 10
In this post, we will talk about thе best free image compressor & optimizer software for Windows 10. Image compression is handy to reduce the size of images (say from 1 MB to 300 KB) which further helps in saving the disk space. It can also come in handy when you have to share your image collection on social networks or with someone. You can generate a copy of the original images with compressed size and use it anywhere. The width and height of the image are not changed, only the file size is decreased by reducing the number of colors or image quality. The output images look exactly the same as input images. You can open the compressed images in any photo viewer apps or software and you won’t notice any change.
Image compressor & optimizer software for Windows 10
We have covered five free image optimizer software. Before using any of these software, you should also take a backup of your original images, just in case:
- Mass Image Compressor
- Imagine
- Caesium
- Romeolight PNGmicro
- imagemin-app.
1] Mass Image Compressor
Mass Image Compressor is open-source software and it lets you batch compress image files. You can add a folder containing JPG, PNG, and RAW format images and compress them. There is a slider available to set the image quality. This software also comes with other options like compress images only if the file size is greater than the defined size, preview output images within the interface, set output width or keep the height & width the same as original, and save images as PNG or JPEG or in the original format. If you are converting RAW images, then output is automatically set to JPEG which can’t be changed.
Download this software here. On its interface, use the Browse icon to add the image folder. A Compress Images of All Child Directories option is also there to compress images present in sub-folders but that option overwrites the original images present in those sub-folders. So, you should uncheck this option.
After that, use the slider to set the image quality. To keep the size (height n width) of output images the same as original, select New Dimension in % option, and set its slider to 100%. Continue the steps and set the output folder using the available button.
When everything is done, press Compress All button. It will compress images one by one and store it in the output folder. You can also preview any output image on the bottom part and also use zoom in and zoom out options to preview the image. For each image, the preview section also shows the before and after size and size reduction in percentage which is a good feature.
2] Imagine
Imagine is a cross-platform, portable, and open-source image compressor software. This software comes with a modern interface that is clutter-free. It also brings bulk image compression feature. The option that I like the most is you can set quality size for each individual image separately. Also, you can see the large thumbnail size preview of input images and save all compressed images in one shot or save images one by one.
You can download it here. On its interface, you can either drag n drop images (JPG and PNG) or use Add button. After that, it will show the preview of input images and automatically compress those images with default settings. For each image, there is a separate slider available to compress it. Use those sliders to compress images. If you want, you can also change the default compression option using the Settings icon available on the top right part.
To save the compressed images, hover the mouse cursor on Save button. It will show three options: Save and overwrite, Save with new name auto, and Export to. You should use the third option to generate a separate copy of compressed images.
Read: Best free online tools to compress images.
3] Caesium
Caesium is another open-source image compressor software that can reduce image size up to 90%. It supports batch compression for JPG, PNG, and BMP format images. You can set quality level for JPG images, but for PNG and BMP images, it automatically adjusts quality level. It also lets you select if you want to keep or remove EXIF data for compressed images. You can do that by accessing the Compression section under Settings menu of this software.
To compress images, use Add Pictures button or File menu. After that, it will show the list of input images. That list also shows other information like new and original size of images, image quality, path, etc. On the bottom part, you can use options to set the output folder, image quality (for JPG), resize output images or keep the original size, and more. Use options and then press Compress! button.
All the compressed images are stored in the folder set by you. If you want, you can also preview the original and compressed images on the right section of its interface.
4] Romeolight PNGmicro
Romeolight PNGmicro can bulk compress PNG images. It comes with a dark-themed interface where you can see image name, new size and optimized size, and path of original and compressed images. You can also use Settings icon (available on the top right section) to set compression factor or quality, output folder, enable interlaced option to compress and save the output in multiple passes, add transparency effect to compressed images, etc.
This software can be downloaded from here. It is available in portable and installer versions. Download the one that fits your requirement. After that, you can drop images on its interface or use Add Files button.
When images are added, access Settings to set options as per the needs. Finally, press Optimize button just next to the Add Files button to compress and save output images.
5] imagemin-app
imagemin-app is the simplest image compressor software in this post. This open-source and portable software doesn’t with any Settings, quality factor, or other options. There will be a blank interface in front of you where you can add PNG images in bulk for compression.
Download it here. When you have opened its interface, either drop a folder containing PNG images or select images and drop them. After that, it will automatically process those images. When the processing is done, it creates an optimized name folder in the same location where input images are present and stores all the compressed PNG images in that folder.
If you are looking for similar free image optimization software, you can also check out:
I hope these free image compressor and optimizer software will help you in optimizing images with ease. I like the Imagine software as it provides separate sliders to set quality for each image. But, other software are also good at providing the expected output.
