Adobe Official Help Websites
- Official help site for Photoshop CS5
- Forum on the Adobe website with questions from Photoshop users. A good place to look for information on how to create specific effects or solving problems. You can post your own question up here if you can't find an answer elsewhere.
Image file formats
Photoshop offers a wide variety of image file formats including BMP, JPEG, PNG, TIFF, and PICT. It can also save in PDF format and, open, and edit files already saved as PDFs. RAW files imported from a digital camera can be opened and edited by Photoshop. In addition to all this, Photoshop has its own file format, PSD. Saving as a PSD file will preserve adjustments and layers without flattening the image, but this type of file can only be opened in Photoshop.
What it is:
Editing images using crop, resize, rotate, and applying masks and filters.
What you need:
Image editing software, such as Photoshop or iPhoto.
Adobe Photoshop is a program used to create and edit graphics
Link to this quick guide to learn how to change file sizes in Photoshop.