调整图像大小而不损失质量：无损压缩

One of the biggest concerns when resizing an image is losing its quality. Well, the answer for this varies depending on how the photo was resized, what tool was used, and other factors. Fortunately, an underrated truth is that you can resize an image without losing quality when done correctly. By following best practices, understanding the nuances of image resizing, and finding the right tool, you can for sure maintain the clarity and sharpness of your images, regardless of the size adjustments you make.

在本指南中，我们将深入探讨三种有效的调整图像大小的方法，同时保持图像的视觉完整性并确保质量几乎保持不变。

第一部分. 调整图像大小而不损失质量的最快方法 [批量支持]

FVC Free Image Compressor is a free online image compressing tool ideal for users who are looking for a faster way to resize images without losing quality. With one click, your photos will be automatically resized and their quality will be retained almost as is. Also, this tool is super user-friendly, as any level of user can use it without feeling lost in the process. Lastly, when you have a bunch of image files to resize, this tool will allow you to compress up to 40 image files simultaneously.

Here’s how to resize image without losing quality using FVC Free Image Compressor

Step 1. Go to your browser and type in Free Image Compressor in your search bar.

Step 2. Once you are already on the website, click Upload Images to import the photos you want to resize. The tool will automatically compress all the photos you have uploaded.

Step 3. Wait for the compression process to finish. Once done, you’ll see a bar status stating it’s finished and information on the before-and-after size of the compressed image. After that, click Download All to save your image.

使用 FVC 免费图像压缩器，调整图像大小不会影响您的工作量。此外，此工具完全免费且非常容易使用，因此它确实是一款适合所有人的便携压缩工具。

第 2 部分。如何在 Photoshop 中缩小图像而不损失质量

同时，当您的设备上安装了 Photoshop 时，您可以使用它来缩小图像文件。这款工具是一款著名的照片编辑软件，因为它具有出色的功能和能力。使用 Photoshop，您不仅可以精确地编辑和增强照片，还可以针对各种目的对其进行优化，包括减小文件大小。以下是您可以尝试在不损失质量的情况下调整图像大小的两种方法。

按像素更改图像大小

Step 1. Open your image in Photoshop by clicking Open or go to File and select the image that you want to resize.

Step 2. Now, head to the Image tab and select Image Size from the menu.

步骤 3：在Image Size（图像大小）对话框中，从下拉菜单中选择Pixels（像素）。若需设置具体尺寸，在宽度和高度输入框中填入数值，并点击OK调整图片大小。

Step 4. Lastly, save your image file by clicking the Save As button under the File tab.

以英寸为单位更改图像尺寸

步骤 1：在 Photoshop 中打开你的图片，可点击Open（打开），或进入File（文件）菜单选择你的图片。

步骤 2：接着，前往Image（图像）选项卡并选择 Image Size（图像大小）。

步骤 3：在Image Size（图像大小）对话框中，从下拉菜单中选择Inches（英寸）。若需设置具体尺寸，在宽度和高度输入框中填入数值，并点击OK调整图片大小。

Step 4. Lastly, click the Save As button under the File tab to save the final image.

Photoshop 是一款功能强大的多功能工具，它允许用户编辑照片并调整其大小而不会降低质量。此外，用户可以利用 Photoshop 的高质量算法来确保图像即使在进行重大尺寸调整后仍保持清晰锐利。但是，使用此工具的一个缺点是它可能非常复杂，这将使初学者难以驾驭其功能。

第 3 部分：通过 AI 升级调整图像大小而不损失质量

The FVC Free Image Upscaler is an AI-powered tool designed to resize images without losing quality. It employs AI super-resolution technology, trained through millions of instances, to recognize and enhance blurred parts of an image automatically. This tool can fix lost pixels, colors, textures, and other details, ensuring the image is resized without losing quality.

Step 1. First, you need to access their official website.

Step 2. Once you have accessed them, import the image file that you want to resize by clicking the Upload Photo button.

Step 3. Now, choose how you want to be upscaled. You can choose to upscale your image from 2x up to 8x. That way, you can resize your image without losing quality.

Step 4. Once done, click the Save button, and it will automatically download the new resized file to your computer.

This AI-powered image upscaler is a great tool for resizing images without losing quality. This feature does not just resize the image but also upscale or enhance it.

第 4 部分。在不损失质量的情况下调整图像大小的 3 种方法的比较

第五部分：关于在不损失质量的情况下调整图像大小的常见问题

结论

With the right methods and tools, you can resize images without losing quality. So, whether you choose any of those tools or not, the main goal is to find the right tool for you. Ready to enhance your images effortlessly? Try out these tools today and see the difference for yourself!