
If you want to resize a JPEG image and don't have access to photo-editing software, you can use Microsoft Paint or Preview on Mac. You can adjust the height, width, and resolution of your image by increasing or decreasing the number of pixels. This will either increase or decrease the image file size. Here is a step-by-step guide on how to do this.
| Characteristics | Values |
|---|---|
| Software | Microsoft Paint |
| File Type | JPEG |
| Steps | 1. Open Paint. 2. Click File > Open and choose the image. 3. Drag the area with your mouse or press Ctrl-A to select it all. 4. Right-click and choose the option to resize your image. 5. Change the percentage to pixels and enter the desired dimensions. 6. Click OK. 7. Go to File > Save as and save the image as a JPEG file. |
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What You'll Learn

Opening a JPEG image in Paint
To open a JPEG image in Paint, follow these steps:
- Open Paint by clicking on the Start menu, scrolling down to Paint, and clicking on the program's icon.
- Once Paint is open, click on "File" in the menu bar, and then select "Open."
- A file explorer window will pop up. Navigate to where your JPEG image is saved.
- If you don't see your JPEG image in the file explorer, make sure that in the "File name:" search bar, the file type is set to "All Files." This will ensure that all image formats, including JPEG, are displayed.
- Select your JPEG image and click "Open." Your image will now be open in Paint.
Now that your JPEG image is open in Paint, you can proceed to reduce its resolution.
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Selecting the area to resize
To select the area of your image that you want to resize, first, open the image in Microsoft Paint. You can do this by clicking 'File', then 'Open', and choosing the image you want to resize.
Next, you will need to select the area of the image you want to resize. There are a few ways to do this:
- If you want to resize the entire image, press Ctrl-A to select the whole image.
- If you want to resize only a portion of the image, use your mouse to drag a rectangular dotted line over the area you want to resize. You can also use the Rectangular Selection tool in the drop-down menu under Select in the "Image" section of the Home tab to achieve this.
- If you want to remove a border from your photo, click in the top-left corner and drag diagonally to the bottom-right corner.
- If you want to draw your own selection, click Free-form selection in the drop-down menu under Select.
Once you have made your selection, you can then choose to resize your image. To do this, right-click on your selection and choose the 'Resize' option from the context menu. Alternatively, you can use the Ctrl + W shortcut.
It is important to note that when resizing your image, you may need to uncheck the "Maintain aspect ratio" box if you want to set specific dimensions for your image.
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Adjusting the image dimensions
To adjust the image dimensions in Paint, you will need to first open the desired image in the application. To do this, click 'File' > 'Open' and choose the image you want to resize.
Next, you will need to select the area you want to resize. You can either drag the area with your mouse or press 'Ctrl-A' to select the entire image. Once you have made your selection, right-click on it and choose the 'Resize' option from the context menu.
In the resize window, make sure to select 'Pixels' as the unit of measurement. Now, you can adjust the height and width of the image by entering the desired pixel dimensions. If needed, you can uncheck the 'Maintain aspect ratio' option to set specific dimensions for the height and width independently. Click 'OK' once you have finished adjusting the dimensions.
After resizing, go to 'File' > 'Save As' and choose the appropriate file format, such as JPEG, to save your resized image.
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Saving the image as JPEG
Once you have resized your image in Paint, you can save it as a JPEG file. Here is a step-by-step guide on how to do this:
- Go to “File” in the top left corner of the Paint window and select “Save As”.
- In the "Save As" window, choose JPEG as the file format in which you want to save your image.
- Enter a descriptive name for your image. It is best to avoid using spaces in the name.
- Click "Save". Your image will now be saved as a JPEG file.
It is important to note that when saving as a JPEG, you may lose some image quality. JPEG is a compressed file format, which means that the image data is compressed to reduce the file size. This compression can result in a loss of detail and quality in the image. If you need to maintain the highest image quality, you may want to consider saving your image in a different file format, such as PNG or BMP.
Additionally, if you are planning to use your image online or in a specific application, it is essential to check the recommended image size and format beforehand. Different platforms and applications may have specific requirements for image dimensions, resolution, and file format. By checking these requirements in advance, you can ensure that your image will be displayed optimally and serve its intended purpose effectively.
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Uploading the image
Once you have finished resizing your image, you can save it. To do this, select 'File' and then 'Save as'. You can then choose where you would like to save the image and what format you would like to save it in.
If you are saving the image as a JPEG, click 'Save as' and choose JPEG. Enter a short descriptive name without any spaces and save. Your image is now ready to upload.
If you are using Microsoft Paint, you can save your image as a PNG, BMP, or JPEG file. You can also export the image as a JPEG, PNG, PDF, or TIFF file.
If you are using Paint 3D, you can save the image as a PNG file. You can now add it to a template without losing any table structure.
If you are using older versions of Paint, you can find the resize function under the Home tab in the Ribbon.
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Frequently asked questions
Open Paint. Click File > Open and choose the image you want to resize.
Drag the area with your mouse that you want to resize, or press Ctrl-A to select it all. Then right-click in your selection and you will see an option to resize your image in the context menu that appears. Change the percentage to pixels. Now enter in the placeholder dimensions.
After you adjust the image, select File at the top and Save As and save the image as a JPEG file type.
































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