
PaintShop Pro is a photo editing software that allows users to resize images with ease. It is important to decide whether to keep the original image or make changes to it before resizing. This is because continuing to resize and save a photo will degrade its quality. PaintShop Pro offers various resizing options, including by pixels, percentage, and AI-powered resampling. Users can specify the desired size in pixels or adjust the size by a percentage of the original. The AI-Resize command, introduced in 2021, enhances the resizing process and provides options for multi-layered projects. Additionally, PaintShop Pro's QuickResizer tool allows for resizing multiple files in a folder with a single click.
| Characteristics | Values |
|---|---|
| Image Editing Tools | Allow users to quickly and easily resize photos for uploading, sharing, or printing |
| File Format | It is recommended to save the document in native format (.psp, .pspimage) and treat .jpg as an output format |
| Original Image | Decide whether to keep the original or make changes to it; changes to a .jpg file will result in loss of quality |
| Duplicate Image | Press Shift+D to create a duplicate image to work on |
| Zoom | Scroll the mouse wheel to zoom in or out to the desired size and note the percentage |
| Resize Window | Press Shift+S or go to Image > Resize on the menu |
| Resize by Pixels | Specify a size in pixels by typing values in the Width and Height boxes or choose from a drop-down list of standard sizes |
| Resize by Percentage | Change the size by a percentage of the original by typing a percentage into the Width or Height box |
| AI-Resize | A new command since version 2021 that uses AI-powered resampling to resize images |
| Resampling Mode | Options include AI-Powered and Bicubic; changing the mode may be necessary to access certain settings |
| Resize all layers | A setting that allows users to resize only one layer in a multi-layered project |
| Advanced Settings | The Maintain original print size and Lock aspect ratio boxes are found in the Advanced settings area |
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What You'll Learn

Resizing by pixel size
When resizing a photo in PaintShop Pro, you have the option to resize by pixels, which allows you to specify the desired width and height in pixels. This method is useful when you have a specific pixel size in mind for your image or when you need to match the image size to a particular application or project.
To resize by pixels, go to "Image > Resize" in the menu bar to open the Resize dialog box. Here, you can enter the desired width and height values in the respective boxes. PaintShop Pro will automatically maintain the image's proportions, so you don't have to worry about distorting the image. However, if you're resizing multiple elements for a project, using pixel values might be inefficient since each element may have different sizes or proportions. In such cases, resizing "by eye" or using percentages might be more suitable.
When resizing by pixels, you can also adjust the resolution or pixels per inch (PPI). This setting is crucial if you plan to print your image, as the print size will depend on the resolution. For example, 1000 pixels will look different at a resolution of 200 pixels per inch than at 300 pixels per inch. Adjusting the resolution will automatically change the pixel dimensions, so you can fine-tune your image to achieve the desired result.
It's important to note that resizing an image multiple times without saving can degrade its quality. Therefore, it's recommended to save your work after each resizing adjustment. When saving a resized image, use the ""Save As" option to avoid overwriting the original high-quality photo. Additionally, consider compressing the file to reduce its size while maintaining its visual quality.
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Resizing by percentage
Next, press Shift+S to open the Resize window, or go to Image > Resize on the menu. In the Resize dialog box, select 'By Percentage' to resize your image by a percentage of its original size. Type the desired percentage into the Width or Height box; for example, entering 25% will resize the image to a quarter of its original dimensions.
If you don't know the exact measurements you want but have a general idea of the desired size, you can use the mouse wheel to zoom in or out until you're happy with the size. Note the percentage displayed on the tab, toolbar, or title bar, and enter this value into the Width or Height box in the Resize window.
When resizing by percentage, ensure that the 'Resample using' setting is set to 'Smart Size', and the ''Lock aspect ratio' option is selected. Leaving other settings unchanged will help maintain the image's proportions.
Finally, save your image. It's recommended to save it in the native format (.psp or .pspimage) if further tweaks are anticipated. If you're satisfied with the result, you can then save it in your desired output format, such as .jpg.
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Working with the original image
Before you start resizing your image in PaintShop Pro, it's important to decide whether you want to keep the original or if you're happy to make changes to it. If you're working with a JPG, any changes you make to the original file will result in a loss of quality each time you save it. Therefore, it's recommended to work on a copy of the original image, which can be created by pressing Shift+D. Once you're done resizing the duplicate image, you can delete the original if you no longer need it.
If you're unsure about the exact measurements but have a general idea of how big you want your image to be, you can use the mouse wheel to zoom in or out until you're happy with the size. Take note of the resulting percentage (e.g., 25%), as this will be useful for resizing.
To resize your image, press Shift+S to open the Resize window, or navigate to Image > Resize on the menu. In the Resize dialog box, you have two main options: resizing by pixels or by percentage.
Resizing by pixels allows you to specify the exact dimensions in pixels by entering values in the Width and Height boxes. You can also choose from a list of standard sizes. This method is useful for ensuring your image fits properly in online mediums such as blogs or websites.
On the other hand, resizing by percentage lets you change the size relative to the original by entering a percentage in either the Width or Height box. This method is helpful if you want to maintain the aspect ratio of your image while still adjusting its size.
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Using AI-Resize
PaintShop Pro's image editing tools allow you to resize a photo using AI. This feature is available in the 2021 and 2023 versions of the software.
To use AI-Resize, open the Resize dialog window by selecting Image > Resize. By default, you will not see the AI-powered settings, so you will need to click on the checkbox to make them appear. Once you select the AI-Powered resampling mode, the bottom part of the advanced settings will change. Here, you can choose the resampling mode you want to use.
If you are resizing a photo, select photo-realistic, and if you are resizing drawings, text, or graphic designs, select illustration. If there is noise in the image, increase the noise reduction using the slider. If you have a powerful GPU, you can also select GPU acceleration for quicker processing.
It is important to note that enlarging your image will require time and resources, so the process may take a while. The time taken will depend on the starting size of your image and the amount of enlargement.
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Resampling modes
When resizing an image in PaintShop Pro, the Resample option lets you specify how pixels are changed in an image. Resampling changes the file size. The aspect ratio should always remain constant when resampling photos to prevent proportion distortion.
The Bicubic method is the slowest method, but it usually produces the best results. This method uses 16 neighbouring pixels (from a 4 x 4 pixel neighbourhood). This larger neighbourhood provides more information about how the colour is changing in that particular part of the image and therefore can improve the colours in the made-up pixels.
The Pixel Resize method, on the other hand, copies the colour of the nearest pixel. When you use the Resize command to decrease the image dimensions, the pixel colours are averaged together. The different resampling methods determine how much weight is given to the original pixels when they are averaged together.
When you use the Resize command to increase the image dimensions, additional pixels must be interpolated from the information in the existing pixels. For example, if you have an image of 100 x 100 pixels and you increase the number of pixels to 200 x 200, you will end up with 40,000 pixels, three-fourths of which are "made up".
In addition to using the Resize command, you can also change the image size by changing the canvas size, cropping the image, printing at a different size, using the Copy Special command, or using the Save for Office command.
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Frequently asked questions
First, decide whether you want to keep the original or if you are happy to make changes to it. If you are working with a JPG, it is safer to work on a copy as changes to the original will lose quality each time you save. To make a duplicate, press Shift+D and work on that copy. Then, press Shift+S to open the Resize window or go to Image > Resize on the menu. Here, you can resize your photo by Pixels or by Percentage.
Select the Pixels option under Pixel Dimensions and adjust the sizing according to your preferences. You can specify a size in pixels by typing values in the Width and Height boxes or choose from a drop-down list of standard sizes.
You can download the full version of QuickResizer image resizer to resize multiple files in a folder with just one click.




























