Click on Image || Resize... or Shift S to open the Resize dialog box.
Before you do anything, let's take a look at the various sections of the Resize dialog box.
Pixel Size: By choosing this option, you can set your image to a definite size by either width or height.
Percentage of Original: By choosing this option, you can resize your image by a percentage instead of working by pixels.
Actual / Print Size: This is for resizing an image for printing rather than onscreen viewing.
- Width and Height are self explanatory.
- The drop-down menu on the right of W and H is for if you want to work in cm, inches.
- Resolution is for your printer resolution.
- The drop-down menu on the right of Resolution is to set it to be pixels / cm or pixels / inches.
Resize Type: You have four (4) types to choose from:
- Smart Resize: I haven't worked out where one would use this one. I did try it out on a dialog box once (reducing the size) and it gave me a lossy type quality.
- Bilinear resample: This is good for reducing the size of your image. If using this on dialog boxes, use Sharpen once then save as a gif. On other types of images, use your own judgement.
- Bicubic resample: This is good for enlarging the size of your image.
- Pixel resize: I have never used this one before so I have no idea what for or why one would use it. Maybe it is used in conjuction with the Resolution option. I do not know.
Resize All Layers: With this option checked, the complete image will be affected by the resize method applied. If it is unchecked, then only the layer you are working on will be resized.
Maintain aspect: With this option checked, when you change the width (for example), the height will change so the image will not be distorted when you apply the resize. If it is unchecked, and you only change the Height, then the width will not change.
ratio of ... to 1: Where the image says 1.2 (this may differ due to the version you are using or if you have changed it at all), I usually leave this alone.