如何使用 3 種有效方法在 iPhone 上調整圖像大小 [免費]

Not all of the images on the web you saved on your iPhone fit as wallpaper or home screens because of their aspect ratio and dimension. Sometimes when you use a photo with incorrect dimensions as wallpaper or home screen, it becomes blurry, and it has black sides instead of being fit to the screen. Troublesome right? Fortunately, you can download a photo resizer on Appstore, use Shortcut, or take advantage of the built-in picture editor on your reach. To resize a photo on your iPhone quickly, you can spend a few minutes reading this article to know it better and fix the size problem you have on your device.

第 1 部分。如何在 iPhone 上調整圖像大小的 3 種有效方法 [可下載和內置]

使用快捷方式[內置]

Shortcut allows its iOS users to create an extensive function that you can use, such as resizing the image you have on your local file. All of the iOS versions 13 and up do have a pre-installed app. Since the application's introduction is new, the old version doesn’t have an extensive app like this. But you can download it on the Appstore of your iPhone or iPad for free. To teach you how to resize an iPhone image using this, you can follow the steps we add below.

Step 1. Open the app on your iPhone, then tap the plus button at the top to add a shortcut to resizing your device.

Step 2. Tap the three line dots, then add the shortcut's name; for this shortcut, you can use the name Resizing Photo. Turn on the Show in Share Sheet so that whenever you want to share the image, it will automatically resize if you choose it.

Step 3. Deselect the Anything on the Share Sheet Type into Images only. Then hit Done to save the settings you created.

Step 4. Before you use this function, you will need to press the plus icon, Media, then press Resize Image. You can set the length according to your need and press Done to save it. Now, every time you share an image, you have the option to resize it automatically with this shortcut.

使用照片應用程序 [內置]

Another built-in application you can freely use on iPhone on any version is the Photo App. Through the years of being a dependable image editor and enhancer of every iPhone user, it would be incomplete if we didn’t mention this app. Some know how this app works on resizing, and some don’t. So, to those users who don’t know how to resize a photo on iPhone, this tutorial can help you.

Step 1. Open the Photo App and tap the photo you want to resize.

Step 2. After selecting the image, you want to resize, tap the Edit.

Step 3. Tap the crop icon on the upper right corner, and tap the squares-like button.

Step 4. On it, there will be different presets of aspect ratio you can select, then tap Done to save the changes.

使用圖像尺寸 [可下載]

Image Size is a third-party app you can rely on and download on iOS to easily resize the photo for iPhone wallpaper. Unlike the two ways we introduce, you need to download this app on Appstore before using it. It is not a built-in app on iOS, but it is available on most iOS versions to be downloaded immediately. Since it is free to use and download, multiple popping ads appear when you use it. If you don’t mind the ads, you can proceed to the steps to use this photo resizer app on your iPhone.

Step 1. Install this photo resizer on your iOS, then open it.

Step 2. Tap the image icon to upload the image you want to be resized by this app.

Step 3. On the upper part, you will see that measurement is being set to the image; change that into your preferred height and length.

Step 4. Tap the download button to save the image you resize.

第 2 部分。在線調整圖像大小的最佳方法，無需廣告或安裝過程

With FVC Free Image Upscaler, you can easily change every image's dimension automatically with an AI's help. You wouldn’t need long-term experience in resizing because it is achievable with this app. Millions of users use this app to resize, upscale, enhance, and improve the quality of their images at once. What makes this tool even better is that you can use this for free. Isn’t it amazing? Well, it is. An all-in-one editor is what this app offers for you. To help you resize your photo, follow the indicated steps and use this tool.

Step 1. You can open this web tool by clicking this link, and a new tab will appear on your display.

Step 2. To add the image you want to resize, click the Add Image. Search for the image on the file folder that will show on your screen and press Open to add it here.

Step 3. This app will load the image you upload and select the magnification you want to apply to your image. It will automatically resize the photo you have into a new dimension.

Step 4. When you are done tweaking the image, press Save to download the resized version on your local drive.

第 3 部分。有關如何在 iPhone 上調整圖像大小的常見問題解答

結論

You can rely on the tool we found on iPhone that could help you easily resize a photo on your iPhone. Even though you don’t download an app, you can use the built-in application saved on your device. If you want to be more specific, you can use and download the app we add. But if you want to resize your image without affecting the quality, use the online tool we add. Read part 2, for we add a tutorial on how to use it.