TIFF is a flexible raster (bitmap) image format supported by virtually all paint, image-editing, and page-layout applications.
Save in TIFF format
Specifies a method for compressing the composite image data. If you’re saving a 32‑bit TIFF file, you can specify that the file be saved with predictor compression, but you don’t have the option to use JPEG compression. Predictor compression offers improved compression by rearranging floating point values, and works with both LZW and ZIP compression.
JPEG compression is available only for opaque RGB and grayscale images that are 8-bits-per-channel and no more than 30,000 pixels wide or high.
Writes the TIFF file with the channels data interleaved or organized by plane. Previously, Photoshop always wrote TIFF files with the channel order interleaved. Theoretically, the Planar order file can be read and written faster, and offers a little better compression. Both channel orders are backward compatible with earlier versions of Photoshop.
Selects the platform on which the file can be read. This option is useful when you don’t know what program the file may be opened in. Photoshop and most recent applications can read files using either IBM PC or Macintosh byte order.
Save Image Pyramid
Preserves multiresolution information. Photoshop does not provide options for opening multiresolution files; the image opens at the highest resolution within the file. However, Adobe InDesign and some image servers provide support for opening multiresolution formats.
Preserves transparency as an additional alpha channel when the file is opened in another application. Transparency is always preserved when the file is reopened in Photoshop.
Specifies a method for compressing data for pixels in layers (as opposed to composite data). Many applications cannot read layer data and skip over it when opening a TIFF file. Photoshop, however, can read layer data in TIFF files. Although files that include layer data are larger than those that don’t, saving layer data eliminates the need to save and manage a separate PSD file to hold the layer data. Choose Discard Layers And Save A Copy if you want to flatten the image.
To have Photoshop prompt you before saving an image with multiple layers, select Ask Before Saving Layered TIFF Files in the File Handling area of the Preferences dialog box.
Save in JPEG format
You can use the Save As command to save CMYK, RGB, and grayscale images in JPEG (*.jpg) format. JPEG compresses file size by selectively discarding data. You can also save an image as one or more JPEG using the Save For Web & Devices command.
JPEG supports only 8-bit images. If you save a 16-bit image to this format, Photoshop automatically lowers the bit depth.
To quickly save a medium-quality JPEG, play the Save As JPEG Medium action on the file. You can access this action by choosing Production from the Actions panel menu.
Offers matte color choices to simulate the appearance of background transparency in images that contain transparency.
Specifies the image quality. Choose an option from the Quality menu, drag the Quality pop-up slider, or enter a value between 0 and 12 in the Quality text box.
Specifies the format of your JPEG file. Baseline (“Standard”) uses a format recognized by most web browsers. Baseline Optimized creates a file with optimized color and a slightly smaller file size. Progressive displays a series of increasingly detailed versions of the image (you specify how many) as it downloads. (Not all web browsers support optimized and Progressive JPEG images.)
Some applications may not be able to read a CMYK file saved in JPEG format. Likewise, if you find that a Java application can’t read a JPEG file, try saving the file without a thumbnail preview.
Save in PNG format
You can use the Save As command to save RGB, Indexed Color, Grayscale, and Bitmap mode images in PNG format.
You can also save an image as one or more PNG files using the Save For Web & Devices command.
Save in GIF format
You can use the Save As command to save RGB, Indexed Color, Grayscale, or Bitmap mode images directly in CompuServe GIF (known as GIF) format. The image is automatically converted to Indexed Color mode.
GIF is only available when the image is 8 Bits/Channel (it only supports 8 Bit/Channel).
Save in Photoshop EPS format
Virtually all page-layout, word-processing, and graphics applications accept imported or placed EPS (Encapsulated PostScript) files. To print EPS files, you should use a PostScript printer. Non-PostScript printers will print only the screen-resolution preview.
Creates a low-resolution image to view in the destination application. Choose TIFF to share an EPS file between Windows and Mac OS systems. An 8‑bit preview is in color and a 1‑bit preview is in black and white with a jagged appearance. An 8‑bit preview creates a larger file size than a 1‑bit preview. See also Bit depth.
Determines the way image data is delivered to a PostScript output device. Encoding options are described below.
Include Halftone Screen and Include Transfer Function
Control print specifications for high‑end commercial print jobs. Consult your printer before selecting these options.
Displays white areas as transparent. This option is available only for images in Bitmap mode.
PostScript Color Management
Converts file data to the printer’s color space. Do not select this option if you plan to place the image in another color-managed document.
Only PostScript Level 3 printers support PostScript Color Management for CMYK images. To print a CMYK image using PostScript Color Management on a Level 2 printer, convert the image to Lab mode before saving in EPS format.
Include Vector Data
Preserves any vector graphics (such as shapes and type) in the file. However, vector data in EPS and DCS files is available only to other applications; vector data is rasterized if you reopen the file in Photoshop. This option is only available if your file contains vector data.
ASCII or ASCII85
Encodes if you’re printing from a Windows system, or if you’re experience printing errors or other difficulties.
Produces a smaller file and leaves the original data intact. However, some page-layout applications and some commercial print spooling and network printing software may not support binary Photoshop EPS files.
Compresses the file by discarding some image data. You can choose the amount of JPEG compression from very little (JPEG Maximum Quality) to a lot (JPEG Low Quality). Files with JPEG encoding can be printed only on Level 2 (or later) PostScript printers and may not separate into individual plates.
Save in Photoshop DCS format
DCS (Desktop Color Separations) format is a version of EPS that lets you save color separations of CMYK or multichannel files.
The dialog box includes all the options available for Photoshop EPS files. Additionally, the DCS menu gives you the option of creating a 72‑ppi composite file that can be placed in a page-layout application or used to proof the image:
DCS 1.0 format
Creates one file for each color channel in a CMYK image. You can also create a fifth file: a grayscale or color composite. To view the composite file, you must keep all five files in the same folder.
Save in Photoshop Raw format
The Photoshop Raw format is a file format for transferring images between applications and computer platforms. The Photoshop Raw format is not the same as camera raw.
Save in BMP format
The BMP format is an image format for the Windows operating system. The images can range from black-and-white (1 bit per pixel) up to 24‑bit color (16.7 million colors).
Save in Cineon format (16-bit images only)
RGB images that are 16 bits per channel can be saved in Cineon format for use in the Kodak Cineon Film System.
Save in Targa format
The Targa (TGA) format supports bitmap and RGB images with 8 Bits/Channel. It is designed for Truevision® hardware, but it is also used in other applications.