There is no reason not to use other image editing programs, Photoshop is simply a professional image editing program that is high quality and has most of the features that professional artists require. If you are not a graphics design professional (or similar), you may be able to find a less expensive or free program that suits your needs.
Here I recommand two programs for you, the one professional image converter is Photoshop, the other one is Pearlmountain Image Converter.
One can blur an image on a PC by using a digital image editing program. The most well-known program for this is Adobe Photoshop, but there are other programs available.
Photographers who use Digital cameras, use photoshop as their editing homebase. There, they can adjust brightness/contrast, hues, color balance, levels, red eye. They can add vigenettes and lomography effects. The results vary on what the photographer wants. There are also many other programs other than photoshop that photographers use, photoshop just happens to be a popular resource.
Photoshop is the best photo editor for professional use. However, you can also use other programs like Pearlmountain image converter or collageitfree.
PSD format we use to store and share image data in other words images created or processed in Photoshop or other programs which supports PSD format.
Compositing in Photoshop is when an image is comprised by combining two or more other images together.
Beside PSE You can open any other format that Photoshop Elements have to offer to save image.
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
Nothing bad, it is image editing program to work with images. When it's not open, it does nothing to your computer, when it is open, it uses a lot of the RAM memory. Photoshop is a very RAM intensive program, but if you ever need those resources back to use with other programs, all you need to do is exit the Photoshop.
Maybe you can use Photoshop which is the best photo editor for professional use. However, you can also use other programs like picture collage maker or Free image resizer.
The GIMP, GIMPshop, or Corel Paint Shop are all free programs like Photoshop
Do you mean how to resize image? First open image from File > Open in Photoshop then go to Image > Image Size. If you want to edit image you can do that regardless of source of that image. Image can be scanned, captured by digital camera, created in Photoshop or any other software available on market. If Photoshop supports that file format (JPEG, TIFF, PSD, PNG and so on) then you can edit it.