Select the layer (or part of image) you want to resize, then hit Ctrl-T, or select Transform Selection from the Edit menu. Then adjust the bounding box and click the checkmark when you are done. You can hold down shift before dragging from a corner of the box to constrain the proportions of the image as you resize.
Use the. Cropping tool.
Image > Image Size
Open image in Photoshop then go to Image > Image Size.
Once in Adobe Photoshop, select image at the top of the page and then select image size. Now you can select the pixel dimensions. There will be a few windows/boxes that pop up. These will allow you to change the image resolution to 300 DPI.
Photoshop is an image editing program. Resolution is the term used for how dense an image is pertaining pixels. Photoshop can handle any range of resolution as long as the computer has enough speed and enough RAM (Random Access Memory) to handle large resolution images. Within Photoshop, resolution refers to pixels per a measure of length. In the US, it is usually measure as pixels/inch. In Europe, pixels/centimeter. A pixel is the smallest "part" of an image, so higher the pixel/inch gives the image more detail and "crispness."
After opening the image you want to check the resolution of by going to "File", then "Open", click "Image", and then from the dropdown box, select "Image Size". In the new box that opens up, the width, and height boxes will tell you what resolution the image is.
First check resolution from Image - Image Size, then convert to CMYK colors from Image - Mode - CMYK
reducing teh resolution and/pr quality of that image.
That depend on resolution. Open image in Photoshop and go to Image > Image Size. Pixel dimensions you can see on the top of Image Size window.
The best way to decrease the resolution of digital artwork is to open it with Adobe Photoshop. Then go to the top of the screen and click Image > Image Size > and change the number in the box labeled "resolution." Be sure that "Resample Image" is checked so that it will discard the extra resolution, rather than reallocating it. Then Save As, and you're done.
There is no other way u have to have photoshop to turn the image to jpeg it will not work otherwise it will just turn back to its original form that it was in
When you change physical size of image in Width and Height fields its not necessary to change resolution. If you publish image to web you are inerested in Width and Height of image not in resolution, if you gonna print image then you must look in Resolution, most printers need 300 pixels per inch to print. Changing Resolution field will automaticaly change Width and Height of image in Photoshop (turn on Resample Image) and you will get best possible result with pixels you have.
Yes it is, depend of what You want to do with image. IF You want to print then resolution is very important, if You gonna post image on web site more important are pixel dimensions because on web images will be displayed with 72 ppi regardless of original image resolution.