Specify jpg, tiff, png image size for print PDF.

Creating printable PDF from JPG, TIFF, PNG image.
When to use it?
If we wish to use photo to prepare printable PDF with bleed and crop marks.
What part of PDF is affected by it?
The PDF will consists of an image and the crop marks.
What to watch for?
The resolution of the image should not be less than 300 dpi as much as possible
How to use it?
Specifying the size of image.
Dimensions: cropped size of PDF without bleed.
Cropping of jpg, tiff, png image
Only a portion of the image is needed for the PDF. Cropping.
Modification of size not in proportion to the original size.
The cropped size of PDF is not to scale with the image.
Modification the size in proportion to the original size.
The crop size of PDF will be to scale with the image.