Choose File > New.

In the New dialog box, type a name for the image.

(Optional) Choose a document size from the Document Type menu.

Set the width and height by choosing a preset from the Size menu or entering values in the Width and Height text boxes.

Set the Resolution, Color Mode, and bit depth.

If you’ve copied a selection to the clipboard, the image dimensions and resolution are automatically based on that image data.

Select a Background Contents option:

Fills the background layer with white, the default background color.

Fills the background layer with the current background color.

Makes the first layer transparent, with no color values. The resulting document has a single, transparent layer as its contents.

Other Opens the Color Picker dialog box to select a background color. For more information, see Adobe Color Picker overview.

(Optional) If necessary, click the Advanced button to display more options.

(Optional) Under Advanced, choose a color profile, or choose Don’t Color Manage This Document. For Pixel Aspect Ratio, choose Square unless you’re using the image for video. In that case, choose another option to use non-square pixels.

When you finish, you can save the settings as a preset by clicking Save Preset, or you can click OK to open the new file.

Open the image you want to duplicate.

Choose Image > Duplicate.

Enter a name for the duplicated image.

If you want to duplicate the image and merge the layers, select Duplicate Merged Layers Only. To preserve the layers, make sure this option is deselected.

Click OK.

Choose File > Open.

Select the name of the file you want to open. If the file does not appear, select the option for showing all files from the Files Of Type (Windows) or Enable (Mac OS) pop-up menu.

Click Open. In some cases, a dialog box appears, letting you set format-specific options.

Choose File > Open Recent, and select a file from the submenu.

Do one of the following:

• (Windows) Choose File > Open As, and select the file you want to open. Then choose the desired format from the Open As pop‑up menu, and click Open.

• (Mac OS) Choose File > Open, and choose All Documents from the Show pop‑up menu. Then select the file you want to open, choose the desired file format from the Format pop‑up menu, and click Open.

Do one of the following:

• (Photoshop) Choose File > Open.

• (Bridge) Select the PDF file and choose File > Open With > Adobe Photoshop. Skip to step 3.

In the Open dialog box, select the name of the file, and click Open.

Under Select in the Import PDF dialog box, select Pages or Images, depending on what elements of the PDF document you want to import.

Click the thumbnails to select the pages or images you want to open. Shift-click to select more than one page or image. The number of selected items appears under the preview window. If you’re importing images, skip to step 8.

To give the new document a name, type it in the Name text box. If you’re importing more than one page or image, multiple documents open with the base name followed by a number.

Under Page Options, choose from the Crop To menu to specify what part of the PDF document to include:

Crops to the smallest rectangular region that includes all the text and graphics of the page. This option eliminates extraneous white space and any document elements outside the Trim Box.

Crops to the original size of the page.

Crops to the clipping region (crop margins) of the PDF file.

Crops to the region specified in the PDF file for accommodating limitations inherent in production processes such as cutting, folding, and trimming.

Crops to the region specified for the intended finished size of the page.

Crops to the region specified in the PDF file for placing the PDF data into another application.

Under Image Size, enter values (if necessary) for Width and Height:

• To preserve the aspect ratio of the pages as they’re scaled to fit within the rectangle defined by the Width and Height values, select Constrain Proportions.

• To scale the pages exactly to the Width and Height values, deselect Constrain Proportions. Some distortion might occur when the pages are scaled.

When more than one page is selected, the Width and Height text boxes display the maximum width and height values of the selected pages. All pages are rendered at their original size if Constrain Proportions is selected and you don’t change the Width and Height values. Changing the values will scale all pages proportionately as they're rasterized.

Specify the following options under Image Size:

Sets the resolution for the new document. See also About pixel dimensions and printed image resolution.

Sets the color mode for the new document. See also Color modes.

Sets the bit depth for the new document. See also Bit depth.

The Width and Height values plus the Resolution determine the final pixel dimension of resulting document.

To suppress color profile warnings, select Suppress Warning.

Click OK.

Choose File > Open.

Select the file you want to open, and click Open.

Indicate the desired dimensions, resolution, and mode. To maintain the same height-to-width ratio, select Constrain Proportions.

To minimize jagged lines at the edges of artwork, select Anti-aliased.