I am trying to use ghostscript to convert PDFs to TIFFs. It works nicely except that anti-aliasing does not appear to happen even when I request it. ?id= Bug ID: Summary: No anti-aliasing when converting some PDFs to raster images. i have some eps created with illustrator, when i convert images at dpi antialias of some text doesn’t work well, specially when font is Helvetica-Black.

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On Windows, Use of bitmap will leave a temporary file with file name starting Rbit. If Ghostscript was not compiled with this device as the default output device, you have to specify it on the command line. There are five color TIFF drivers that produce uncompressed output:. Text and graphics anti-aliasing are enabled by default. Inches 1 inch equals 2. When Tumble is false, the pages are oriented suitably at the left or right.

As the user inteface changed a bit, some of your tools that were using pstoimg may not work any more. A PostScript program could check these values and print only the selected page range. Please see the PNG website for a complete description of the format.

The following properties can be set: This is faster than error diffusion. The equivalent CMYK color for each spot color is determined using the alternate tint transform function specified in the Separation and DeviceN color spaces.

[gs-bugs] [Bug 694413] New: No anti-aliasing when converting some PDFs to raster images

Here is a screenshot of the PDF: See the comments under the tiffsep and tiffsep1 device about the antialiaing number of spot colors supported by Ghostscript.

  ISO 20765 PDF

Otherwise, true means that the printer is currently set up to print on both faces of the paper and false that it is not, but that it can. I’ve been working with this project since the start of the year and have progressed quite a way with converting between postscript-type files, namely PDFs.

Generally Ghostscript will support a maximum of 64 process and spot colors. Currently, the code has the limitation of 8-bit continuous tone rendering only.


The gnostscript of the subsampling box n should be 4 for optimum output, but smaller values can be used for faster rendering. The later case is described here. Should the plot be done by postscript or pdf? Setup files are in a simple “Key: Example – the 5th page at dpi: It is supported by the pcxmono pcxgray pcx16 ghostwcript pcx24b pcxcmyk series of devices.

They may be interesting as code examples, as well. These suppress interactive prompts and enable some security checks on the file to be run. Here is an example of such a setup file: This question deals with Ghostscript and quality concerns. When using the separation color antiaiasing, the following options may be set using setpagedevice, as described in the PostScript Language Reference:.

Their use is still experimental and they could be removed in a future version. This provides a simple mechanism for users and external applications to be informed about the names of spot colors ghostscrupt a document.

File names for the spot color separation files are created by appending the Spot color name in ‘ ‘ and ‘.

[gs-bugs] [Bug ] New: No anti-aliasing when converting some PDFs to raster images

These are all switch settings on the DMP, and I have configured them for 8-bit data and carriage return exclusively. These are all implemented as ‘downscale’ devices, which means they can implement page level anti-aliasing using the -dDownScaleFactor switch. Stack Overflow works best with JavaScript enabled. These options can be set through the inclusion of fhostscript setup file on the command-line:.


The trapping code is not covered by any existing patent. These data files have the name specified by the “OutputFile” parameter with “sn” appended to the end where “n” is the spot color number 0 to 12 “.

It is selected like this:. Multi-strip files reduce the memory requirement on the reader, since readers need only store and process one strip at a time.

All driver authors are encouraged to adapt their drivers for IJS, and if there is an IJS driver available for your printer, it should be your first choice. This can be very useful to reduce the memory requirements when printing in True Color on some high resolution ink-jet color printers. It is recommnded that this device is used for PostScript output.

This is done because the XCF format does not currently support spot colors.

This information will be displayed in the printer dialog and will be updated after the user interaction.