
Paint is a Windows-based image editing software that can be used to reduce the file size of a PNG image. While Paint does not support PNG compression, it can be used to resize images and convert them to other file formats, such as JPEG, which can help reduce the overall file size. Additionally, there are several online tools and software available that specifically offer PNG compression to reduce the size of PNG files without significantly impacting their visual quality.
| Characteristics | Values |
|---|---|
| How to reduce file size of PNG in Paint | 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 | |
| Right-click in your selection and you will see an option to resize your image | |
| Change the percentage to pixels and enter the desired dimensions | |
| Click File > Save as and save the image as a PNG file | |
| You can also use lossless compression methods such as zip to make your file size smaller |
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What You'll Learn

Open Paint and upload your PNG
To reduce the file size of a PNG using Paint, you'll first need to open the program and upload your image file.
- Open Paint. You can find Paint in All Programs > Accessories.
- Click File > Open and choose the image you want to resize.
Now that Paint is open and your image has been uploaded, you can proceed to resize your image.
Resize your image
- Drag the area with your mouse that you want to resize, or press Ctrl-A to select it all (on older versions of Paint, you can find Resize under the Home tab in the Ribbon).
- Right-click in your selection and you will see an option to resize your image. Change the percentage to pixels and enter in your desired dimensions.
- You may need to uncheck "Maintain aspect ratio" to set the desired dimensions. Click OK when you’re done.
Save your image
Now go to File > Save as and save the image as a PNG file.
Your image is now ready to use!
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Select 'Resize and Skew'
To resize an image in Paint, first, open the app. Then, navigate to Menu > Open, and find and select the image that you want to resize and click on Open.
You will then see the original image size in the Width and Height input areas. Select the number in the necessary input area and enter a new value. Press Enter. The pixel dimensions of your image will be changed.
Before resizing, make sure to check the box next to "Maintain aspect ratio". This will ensure that the width will change automatically as soon as you change the height and vice versa, preventing any weird distortion.
It is also important to note that while you can slightly upscale the image, you should avoid making the image twice its size, for instance, as it will likely become blurry.
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Adjust width and height
Adjusting the width and height of an image in Paint will reduce its file size. This is how you can do it:
Step 1: Open the image in Paint
Open Paint. Click File > Open and choose the image you want to resize.
Step 2: Select the area you want to resize
Drag the area with your mouse that you want to resize, or press Ctrl-A to select it all (on older versions of Paint, you can find Resize under the Home tab in the Ribbon).
Step 3: Open the Resize window
Right-click on your selection and you will see an option to resize your image in the context menu that appears. Change the percentage to pixels.
Step 4: Adjust the width and height
Now enter in the new width and height dimensions. You may need to uncheck "maintain aspect ratio" to set the desired dimensions. Click OK when you’re done.
Step 5: Save your image
Now go to File > Save as and save the image as a PNG file.
Additional tips:
- Reducing an image's size, even by a little, makes the image's file size smaller.
- Enlarging an image will reduce its quality.
- If you want to resize an image proportionally, make sure the "'Maintain aspect ratio'" box is checked.
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Save as JPEG
To reduce the file size of a PNG image, you can save it as a JPEG file in Paint. JPEG is a commonly used image format that supports compression, which reduces the size of the image file.
- Open the image in Paint: Locate the image file on your computer, right-click on it, and select "Open with > Paint" from the menu.
- Prepare the image (optional): If you need to resize the image or make any edits, you can do so before saving. To resize, click on the "Resize" or "Resize and Skew" icon from the Home tab, ensure the "Maintain aspect ratio" box is checked, set the width or height, and click "OK."
- Save as JPEG: Once you have made the necessary edits, go to the "File" menu and select "Save As." In the "Save As" dialog box, choose "JPEG Picture" or "JPEG" from the "Save as type" dropdown menu. Enter a descriptive name for your file, preferably without spaces, and select the desired location for saving.
- Quality and compression: By default, Paint will save the JPEG image with a standard compression level. If you require a smaller file size, you can further compress the JPEG image using third-party software. However, keep in mind that excessive compression will degrade the image quality.
- Set JPEG as the default format (optional): If you regularly save images as JPEG, you can set it as the default format in Paint. Right-click on the Paint shortcut in the Start menu and select "Properties." Append "C:\blank.JPG" to the end of the Target field (including the quotes). Now, every time you open Paint, it will start with a blank JPEG image, and the "Save As" option will default to JPEG.
Remember that JPEG is a lossy compression format, which means that some image quality may be lost during compression. If you need to retain the highest image quality, consider using other lossless compression methods or formats like zip or PNG.
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Compress the file
Compressing a PNG file reduces its file size, making it easier to upload and share. There are several ways to compress a PNG file using Paint and other online tools.
Using Paint
- Open Paint and select 'File' > 'Open' to choose the PNG file you want to compress.
- Resize the image by dragging the area with your mouse or pressing 'Ctrl-A' to select the entire image. Right-click on your selection and choose 'Resize' from the context menu.
- Change the unit of measurement to 'Pixels' and enter your desired dimensions. You may need to uncheck the 'Maintain aspect ratio' box to set your preferred width and height. Click 'OK' when you're done.
- Go to 'File' > 'Save as' and save the image as a PNG file.
Using Online Tools
There are several online tools available that can compress PNG files. These tools typically involve uploading your PNG file(s), adjusting the compression settings if desired, and then downloading the compressed file(s).
One such tool allows you to upload up to 20 PNG images at once and then provides the option to manually adjust the compression level for each image. You can download each image individually or as a ZIP file containing all the compressed images.
Another online tool automatically determines the appropriate ratio for quality compression. If you're satisfied with the server's choice, you can simply download the compressed file(s). However, you also have the option to manually control the compression level by adjusting a quality slider.
Lossless vs Lossy Compression
It's important to note that there are two types of compression: lossless and lossy. Lossless compression removes unnecessary or redundant information from the file, reducing its size without affecting its appearance or quality. On the other hand, lossy compression removes information that may impact the quality of the file, potentially reducing its visual fidelity.
When compressing PNG files, you can choose between lossless and lossy compression methods. Lossless compression ensures that the quality of your PNG file is maintained, but the file size reduction may be limited. Lossy compression can achieve greater size reduction but at the cost of lower image quality.
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Frequently asked questions
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. Change the percentage to pixels and enter the desired dimensions.
Make sure there is a checkmark in the box next to "Maintain aspect ratio" before setting the width and clicking OK.
Go to File > Save as and save the image as a PNG file.
You can try using a lossless compression method, such as zipping the file, which will make the file size smaller without reducing its quality.


























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