Gd Resize Image Aspect Ratio. You can pick from a predefined size of 25 50 75 or you can give a custom size in percentage or pixels. For instance you have an image with the following dimensions.
The most important step is to resize your picture. For instance you have an image with the following dimensions. Crop an image by enclosing a rectangular area with a custom or predefined aspect ratio.
Resizing an image is probably the most common processing operation that applications use.
Last updated on march 24th 2015 by gabriel livan this is a php class useful if you need to resize images keeping their aspect ratio using the gd library. If you were to try to resize the photo above from 200 x 200 pixels to 100 x 250 pixels you will need to turn off maintain aspect ratio or constrain proportions and your resized photo will look like this. The function calculates best fit dimensions for the thumbnail. The most important step is to resize your picture.