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- Resizing parameters in Photoshop
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Resizing parameters in Photoshop
Last updated on
Oct 27, 2025
Learn about resizing parameters in Adobe Photoshop, including dimensions, resolution, and resampling, to adjust image size with quality.
The Image Size dialog provides controls for adjusting image size and resolution. These parameters let you define dimensions, units, proportions, and resampling behavior.
Dimensions
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Description |
Units |
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Width |
The horizontal measurement of the image. |
Pixels, inches, cm, mm, points, picas, |
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Height |
The vertical measurement of the image. |
Pixels, inches, cm, mm, points, picas, |
|
Resolution |
The pixel density of the image. |
Pixels per inch (PPI) or pixels per centimeter (PPC) |
Constrain proportions
- On (default): Maintains the aspect ratio between width and height.
- Off: Allows independent adjustment of width and height, which may distort the image.
Resolution
Resolution determines how many pixels appear per inch or centimeter, affecting print and display quality.
Resolution range | Use |
72–96 PPI | Web and screen display |
150–300 PPI | Standard printing |
300+ PPI | High-quality printing and detailed images |
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