Publishing and Exporting > About export file formats > PNG Sequence and PNG Image

These export settings are similar to the PNG Publish Settings options, with the following exceptions:

Dimensions sets the size of the exported bitmap image to the number of pixels you enter in the Width and Height fields.

Resolution lets you enter a resolution in dots per inch (dpi). To use the screen resolution and maintain the aspect ratio of your original image, select Match Screen.

Colors is the same as the Bit Depth option in the PNG Publish Settings tab and sets the number of bits per pixel to use in creating the image. For a 256-color image, choose 8-bit; for thousands of colors, choose 24-bit; for thousands of colors with transparency (32 bits) choose 24-bit with Alpha. The higher the bit depth, the larger the file.

Include lets you choose to export the minimum image area or specify the full document size.

Filter options match those in the PNG Publish Settings tab.

In addition, you can choose Interlace to make the exported PNG display in a browser incrementally as it downloads; Smooth to apply anti-aliasing to an exported bitmap to produce a higher-quality bitmap image and improve text display quality; and Dither Solid Colors to apply dithering to solid colors and gradients.

For information on these options, see Publishing PNG files.