如何使用 GIMP 调整图像大小的完整过程

在编辑图像时，调整图像大小是必不可少的。有时，您需要更改图片的高度和宽度，以便获得您喜欢的尺寸。此外，调整图像大小由其他照片编辑器完成，以减小其图像的大小或提高质量。幸运的是，我们找到了一个允许您调整图像大小的应用程序。

GIMP is an online tool manipulation software where you can edit your image. In addition, GIMP enables you to change the height and width of your image, increasing the quality of your image. Therefore, if you want to use GIMP to resize an image, check this article now.

第 1 部分。如何使用 GIMP 调整图像大小

GIMP 是一个图形处理应用程序平台，允许图形设计师创建出色的输出。它使用户能够制作设计元素、脚本图像、图标等。此外，它是一个免费的开源应用程序，您可以在几乎所有媒体平台上使用，例如 Windows、Mac 和 Linux。许多人在寻找 Adobe Photoshop 的替代品时推荐此应用程序。

尽管它的界面比 Photoshop 更简单，但有些人仍然很难使用 GIMP。 GIMP 更有趣的是它允许您编辑图片的像素。如果您正在寻找最佳的图像调整器，您可能需要考虑将 GIMP 作为您的偏好。

在这一部分中，我们将向您展示使用 GIMP 调整图像大小（尺寸和大小）的两种方法。

如何使用 GIMP 调整图像尺寸

Step 1. First, download the GIMP application on your device and install it. After installing, open the app on your device. And then, open the image on GIMP.

请注意，当您在 GIMP 上打开图像时，图像将被缩放，以便整个图像适合您的图像画布。您将在窗口的右上角看到图像的当前大小。

Step 2. To resize the dimensions of your image, go to Image, then select the Scale Image dialog. And on the Scale Image dialog, you can change the Width and Height of your image. Type your preferred dimension size and proceed to the next step. Besides the height and width of your image, you will see a chain indicating that the height and width of your image are chained to each other, which means when you change the height, the width will follow.

Step 3. Once you are done altering the size of your photo’s dimension, you can now move to export your image. To export your image, go to File > Export. And to export your output with a new file name, go to File > Overwrite, then name your file.

如何使用 GIMP 调整图像大小而不损失质量（文件大小）：

在本教程中，我们将使用 JPEG 图像，因为这种格式是有损压缩，这意味着在压缩此图像的大小时，我们将牺牲其质量。但是通过使用 GIMP，可以在不影响其质量的情况下调整图像大小。

Step 1. Using the same image above, we will resize the image to 200px wide and export the file with varying JPEG compression levels. You will observe in the example below that at a quality setting of 80, the file size of your image is smaller than at 100 while having almost the same quality.

Step 2. When you are done modifying the size of your image, we will now export your output. Click the File button and select Export.

Step 3. On the Export Image tab, enter the new name of your image. If you worry about what format your output will be saved in, GIMP automatically exports the original file format. In our example, you will see that the output format is still .jpg.

Step 4. After clicking the Export button, the Export Image as JPEG tab will prompt, where you will change the quality of the image you are exporting. If you also have the Show preview in the image window, you can tick the box and see the preview of your image. You will also see the File size information so that you will know the resulting file size of your image.

Step 5. And finally, tick the Export button to export your image and save it on your device.

这就是使用 GIMP 调整图像尺寸和文件大小的方法。您可以对图像进行更多编辑，例如旋转图像、翻转照片和裁剪图像。如果您仍然想要调整图像大小或提高图片质量的选项，请阅读下一部分。

第 2 部分。 GIMP 的替代方案

GIMP 是许多专业人士使用的最标准的照片编辑应用程序之一。但是，一些用户在使用此软件编辑照片时遇到困难，例如调整图像大小。如果您是想要使用更直接的应用程序的用户之一，那么我们可以为您提供解决方案。

FVC Free Image Upscaler is a free online application with a simple user interface, making it a beginner-friendly tool if you are searching for the best image upscaling tool to enhance the quality of your image. It uses an AI upscaling process, automatically detecting the blurry parts of your image and enhancing it. Moreover, you can improve your photo with up to 8x magnification. It also supports the most common image formats, such as JPEG, JPG, PNG, and BMP. And unlike other editing applications, FVC Free Image Upscaler can resize your image without losing its quality. So, if you want to use this tool to resize and enhance your image, follow the easy steps below.

如何在不损失质量 GIMP 替代方案的情况下调整图像大小：

Step 1. Open your web browser and search FVC Free Image Upscaler on the search box. You can also click the link directly to the main page. And on the software’s main user interface, click the Upload Photo button to launch the app on your device.

Step 2. Then, tick the Upload Photo button on the main user interface to add the photo you want to resize/upscale.

Step 3. After uploading your file, select among the magnification presets. You can select between 2x, 4x, 6x, and 8x. Then, you can check the preview of your output by sliding your cursor on the image.

Step 4. Lastly, hit the Save button at the bottom right corner of the interface to save your output on your device.

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第 3 部分。有关如何使用 GIMP 调整图像大小的常见问题解答

结论

And that’s the process of how to use GIMP to resize images. Although GIMP has a complex interface, following the steps we provided above, you can resize your image's dimensions and size. But if you like to use a free online image resizer that can enhance the quality of your image, use FVC Free Image Upscaler.