Resizing Tutorial

Basically all you need to know when resizing is what size (in pixels or inches/centimeters) that you want your image. Depending how how much bigger/smaller you are making the image, and how good of quality the original is will determine the quality of the resized image.

Pixel Dimensions --> This tells you how many pixels wide by how many pixels tall your image is. You can choose to resize your image either by pixels or percentage of the original image.
Print Size --> This tells you how big your image would be were you to print it off on the computer. If you are making graphics for the internet, you most likely don't need to worry about this section (though you may want to change you image's resolution as you get more advanced in your graphics making).
Resample using --> This lets the computer know which method you'd like to use when you resize your image. A brief description of this is a little lower on the page.
Lock aspect ratio --> If you check this then PSP will keep the image at the same width to height ratio the same if you adjust the Pixel Dimensions or the Print Size. If you have an image that is a slightly different ratio than what you want (i.e. your image is 100x150 and you want to change it to 100x100) then you'll need to either uncheck the box or change the number in the drop/slide menu to the ratio you want (for 100x100 change this to 1.0000 because you want the image just as high as it is tall). Note: PSP changes things with the width dimensions as the desirable ones. Also of note: unchecking this and changing just the height or just the width will make your image appear smooshed or stretched. Sometimes this is what you want, and sometimes it isn't.
Resize all layers --> Checking this box will resize all of the layers in your image. If you have only one layer, it doesn't matter. If you would like to make only one layer small/larger, make sure this box is unchecked.

The following table gives you examples of the different types of resizing that are possible in PSP 9 and how they look when applied to make a 200x200 pixel JPG into a 100x100 pixel PNG. Notice how subtle, yet noticeable the differences in shapness are.

  Original Image: Smart Size: Bicubic: Bilinear: Pixel Resize: Weighted Avarage
Lower Quality:
Higher Quality:

Here is the same table, this time using GIF to PNG instead of JPG to PNG:

  Original Image: Smart Size: Bicubic: Bilinear: Pixel Resize: Weighted Avarage
256 Colours (8 bit): Will not apply Will not apply Will not apply Will not apply
16 Million Colours (24 bit):

Generally speaking, Bicubic and Pixel Resize will give you the sharper looking images, and Weighted Average gives you the smoothest.

Tips:

  • Your image will most likely look pixelated or blurry (depending on the type of resizing you use) if you try and make it a bunch bigger or bunch smaller. To compensate, you'll probably want to add effects (which is a whole 'nother can of worms), or blur/sharpen your image before you resize it.

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