Resizing JPEG images will help when you need to attach multiple photos to an email or upload them to a website. Resizing an image will always reduce (slightly) its quality, while enlarging an image beyond its original size will make it appear distorted (checkered). You can resize images using free websites, free image editing programs on your computer, or free apps on your mobile device.
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Method 1 of 5: Using Image Resizing Websites
Step 1. Visit the site of the image resizing service provider
There are many websites that allow you to easily upload any type of image and resize it, including JPEG files. Enter the search keyword “resize jpeg” to get a wide selection of websites. Resizing images via a website is more effectively done via a computer, not a mobile device. Some of the sites that are quite popular include:
- picresize.com
- resizeyourimage.com
- resizeimage.net
Step 2. Upload the-j.webp" />
Most of these service provider sites allow you to upload any type of file. Click the “Choose file”, “Upload image”, or “Browse” button to locate the image file whose size you want to resize on your computer.
If the image you want to resize is uploaded on another website, you will need to download it to your computer first before uploading it to the website of the resizing service provider
Step 3. Use the size control tool to resize the image
Each website has a different set of controls to adjust the image size. You can click and drag the box, or use the slider to adjust the final size. You can also enter the exact dimensions of the image you want.
Enlarging the image size from its original size will result in an image with a visibly poorer quality
Step 4. Select compression settings (if any)
Some websites allow you to specify the compression level. Higher compression results in a smaller file size, but at a much lower quality. Look for the quality slider or drop-down menu to change the final image quality. Keep in mind that not all resizing service provider sites have quality options.
Step 5. Download the resized image
Once you've determined the size and quality settings, you can resize it and download the image. Click the “Resize” button to load a new image. It's possible that you can review the changes before the image file is downloaded to your computer.
When downloading a new size image, make sure you don't "overwrite" the original image file. This way, you can make changes again if you're not happy with the final image
Method 2 of 5: Using Paint (for Windows)
Step 1. Make a copy of the image file
Before resizing an image in Paint, make a copy of the image file so you don't lose the original. This way, you can reprocess the image if you are not satisfied with the final result.
To make a copy of a file, right-click the file icon and select “Copy”. Right-click an empty area in the same directory and select “Paste” to make a copy of the file
Step 2. Open the image in the Paint program
Paint is a free image editing program included with every version of Windows. Right-click the image file and select “Edit” to open it in Paint.
Step 3. Select the whole image
If you want to resize the entire image, select the entire image by pressing the Ctrl+A key combination. You can also click the “Select” button on the “Home” tab and select “Select All”. After that, you will see dotted lines displayed on the sides or corners of the image.
Step 4. Click the “Resize” button
You can find the button in the “Home” tab. Alternatively, you can also press the Ctrl+W key combination. After that, the " Resize and Skew " window will be displayed.
Step 5. Use the " Resize " field to resize the image
You can change the image by percentage or number of pixels. If you select " Pixels ", you can enter the exact size of the image you want. You can also enter a percentage greater than "100" to increase the image size from its original size.
- By default, Paint will keep the original aspect ratio of the image. This means, when you enter a certain number in one column, the numbers in the other column will automatically change according to the image ratio. With this setting, the image will not “pull” or “shrink” when resized. You can uncheck the "Maintain aspect ratio" option if you want to specify both the horizontal and vertical columns separately.
- Enlargement of the image from its actual size can make the final image appear cracked.
Step 6. Click "OK" to view the resized image
Once you click “OK”, the image size will be resized based on the value or number you previously entered. Since the preview is not available, you will need to apply the changes to see it.
If you are not satisfied with the final result, press the Ctrl+Z key combination to revert the changes made. You can also click the " Undo " button at the top of the window
Step 7. Drag the edges of the canvas to fit the resized image
The size of your image will change, but the canvas size will remain the same as the original image size. Click and drag the boxes around the corners of the canvas to resize them to the new image size and remove any excess white space.
Step 8. Save the resized image
Once you're happy with the new size of the image, you can save your changes to the file. Select “Save As” from the tab and select “JPEG picture“. You can name the file and choose a save location.
Method 3 of 5: Using Preview (for Mac OS X)
Step 1. Make a copy of the image file
It's a good idea to make a copy of the original image file before resizing the image. This way, you can reuse the original file if something goes wrong or you don't like the final image. Select the image file and press the key combination Command+C. After that, press the Command+V key combination to make a copy of the file in the same location or folder.
Step 2. Open the image via the Preview app
By default, the program usually opens when an image file is double-clicked. If the image opens in another program, right-click the file and select “Open With”, then select “Preview “.
Step 3. Click the “Tools” menu and select “Adjust Size”
After that, a new window will appear and you can resize the image through the options in that window.
Step 4. Click the drop-down menu to select the unit you want to use
You can select “Pixels”, “Percentage” and several other units to measure the image. Selecting " Pixels " allows you to specify the exact final size of the image you want.
Step 5. Enter the desired length or width of the image
The two columns are interconnected so that when the number or value in one column is changed, the values in the other column will automatically change so that the proportions of the image remain correct. This way, the image won't “pull” or shrink when resized. If you want to change the values or numbers in both columns independently, uncheck the "Scale proportionally" option so that the two columns are not tied to each other.
Step 6. Check the new file size
You can see the new file size at the bottom of the window before the changes take effect. This is useful when you need to resize an image to fit within a file size limit for sending via email or other online services.
Step 7. Click "OK" to apply the changes
The image size will be changed based on the settings you made earlier. If you're not satisfied with the result, press the Command+Z key combination to remove the new changes and return the image to its original size.
Step 8. Save your file
If you are satisfied with the new size of the image, you can save the changes to a new file. Click the “File” menu and select “Save” to save the changes.
Method 4 of 5: Using an iPhone, iPad, or iPod Touch
Step 1. Install an app that allows you to resize images
There is no built-in way or feature to resize images on iOS devices. However, there are various applications that allow you to resize images. You can download these apps from your device's App Store. Some of the applications that are quite popular, among them, are:
- Resize It
- Image Resizer+
- Desqueeze
Step 2. Open the app and select the image you want to resize
It is possible that you will be asked to allow the app to access the photos on your device. This step is important so that the application can browse the photos stored on the device. Find the photo you want to resize and touch the photo to open it.
Step 3. Touch the “Resize” button
Usually, apps like these offer a variety of tools to choose from, including resizing tools. Touch the " Resize " button to start the image resizing process.
Step 4. Enter the new image size
Different applications, different interface appearance. However, usually you can choose from a variety of default size options or you can enter the desired resolution yourself. The value of the length and width of the image will be tied to each other so that the proportion of the image can be maintained.
If you don't mind the image that might “pull” or shrink when resized, you can touch the chain or lock button to enter a different value into each column
Step 5. Save the resized image to camera roll
Once the image is resized, touch the “Save” button to save it to the camera roll. You can find the image in the Photos app, just like any other photos stored on your device.
Method 5 of 5: Using an Android Device
Step 1. Download an app that can resize images
Android devices are not equipped with a feature to resize images. However, there are many applications available to resize images. You can search for these applications through the Google Play Store and many applications can be downloaded for free. Some of the most popular image resizing applications include:
- Photo & Picture Resizer
- Resize Me!
- Image Shrink
- Reduce Photo Size
Step 2. Open the downloaded app and allow the app to access your photos
When you run the application for the first time, you may be asked to allow the application to access the photos stored on the device. This step is important to do so that the application can load photos on the device.
Step 3. Open the photo whose size you want to resize
Use the app to search for the photo whose size you want to resize. The process varies depending on the application you are using, but in general you need to touch the " Select photo " button in the main menu of the application to open the photos stored on the device.
Step 4. Select the resizing device
Once the image is opened, you need to select the image resizing tool (“Resize”) in the application. Again, the process may differ depending on the application used.
Step 5. Select the desired image size
The image size (in pixels) and the original file size will be displayed. You can choose the default image size option or enter a different size, depending on the application you are using. When entering different sizes, you can only enter values or numbers in one column (eg long or wide columns) because the sizes in other columns will be adjusted automatically.
Step 6. Save the resized image
The edited image may be saved automatically, or you will need to save it manually by touching the “Save” button, depending on the application used. The original existing image will not be changed or affected.
Step 7. Look for the resized image
Each application will save the resized images in a different location or folder. In general, you can find it by opening the “Pictures” folder, and opening the folder with the name of the previously used application. After that, you can share the edited image, just like when you want to share another image that is on the device.
