Graphics

The Graphics page of the Printing Preferences window allows you to compress, downsample or convert text and images to reduce the size of the resulting PDF file.

The window can be opened by choosing the Printing Preferences menu item when novaPDF is selected in the Printers and Faxes window and clicking the Graphics tab. This tab is also accessible from the printing Windows application in the Print dialog if you press the Properties (Preferences) button when novaPDF is selected.

Predefined

The Predefined drop-down list allows you to quickly select a set of settings from the options list-view: Compress, Downsample, Convert, None or Custom.

Options list

The list contains information for all available graphics options. The Options column shows the name of the graphic option while the Description column displays information about the option's properties.

Configure

The selected option can be customized by clicking this button. See the Compression, Downsampling and Conversion sections for details about each particular feature.

Compression

Options on this window are used to configure the compression for text and graphics, monochrome images, indexed images and high color images.

The dialog can be opened by pressing the Configure button from the Graphics window in Printing Preferences.

Text and graphics

Enable compression

If checked text and graphics will be compressed.

Method

Text and graphics will be compressed using ZIP compression.

Level

Available compression levels are: Fastest, Normal and Maximum. By default, Normal level of compression is used.

High Color Images

Enable compression

If checked high color images will be compressed.

Method

High color images will be compressed using JPEG or ZIP compression.

Level

You can choose ZIP compression level from Fastest, Normal and Maximum, and JPEG compression level from Minimum, Low, Medium, High and Maximum. By default, the high color images will be compressed with the High level of JPEG compression.

Indexed Images

Enable compression

If checked indexed images will be compressed.

Method

Indexed images will be compressed using ZIP compression.

Level

Available compression levels are: Fastest, Normal and Maximum. By default, Normal level of compression is used.

Monochrome Images

Enable compression

If checked monochrome images will be compressed.

Method

Monochrome images will be compressed using ZIP compression.

Level

Available compression levels are: Fastest, Normal and Maximum. By default, Normal level of compression is used.

Downsampling

Options on this window are used to configure downsampling for monochrome images, indexed images and high color images.

The dialog can be opened by pressing the Configure button from the Graphics window in Printing Preferences.

Enable downsampling

If checked monochrome, indexed or high color images will be downsampled. That means the images will be added in the PDF file at a different resolution then the one from the original document. Usually, this feature is used to save images at a lower resolution, resulting smaller PDF files.

Resolution

The image resolution can be selected between 72 dpi and 2400 dpi. By default the resolution is 96dpi.

Method

Available downsampling methods are: Box, Bilinear, B-Spline, Bicubic, Catmull-Rom, Lanczos. By default, the Bicubic downsampling method is used to downsample images to the selected resolution.

Conversion

Options on this window are used to configure color conversion for text and graphics, indexed images and high color images.

The dialog can be opened by pressing the Configure button from the Graphics window in Printing Preferences.

Enable conversion

If checked colors for text and graphics, indexed images or high color images will be converted. That means the images will be added in the PDF file with converted to grayscale or monochrome (black/white) color.

Convert to grayscale

Each color will be converted to a gray value between 0 and 256. You can convert to grayscale texts and graphics, indexed and high color images.

Convert to monochrome

Each color will be converted to black or white. You can convert to monochrome texts and graphics, indexed and high color images. For images you can select a dithering algorithm for better results.

Treshold

The treshold value is used to convert to monochrome color. It can range between 0 and 256; the default value is 128. All colors less the treshold value will be converted to black and all colors above the treshold value will be converted to white.

Dither

When converting images to monochrome you can choose a dithering algorithm for better results. Available algorithms are: Floyd & Steinberg error diffusion, Bayer ordered dispersed dot 4x4, Bayer ordered dispersed dot 8x8, Ordered clustered dot 6x6, Ordered clustered dot 8x8, Ordered clustered dot 16x16.

By default, the Floyd & Steinberg error diffusion dither method is used to dither monochrome images. Dithering is not available for text and graphics.