ghostscript

I haven't installed Rosetta on my M1 Macbook. Have Docker and all deps installed and this even worked a few times but not sure what caused this error suddenly:

I'm trying to deploy an application I wrote to my unraid server so I had to docker-ize it. It's written with nodejs and depends on imagemagick and ghostscript so I had to include a build step to install those dependencies. I'm seeing an error when running this image though

Here's my dockerfile

I'm trying to reduce the size of a pdf file by converting its images from color/gray to B/W and re-encode those images using the more efficient CCITT Group 4 or JBIG2 encoding.

Can it be done via Ghostscript? How? If not, is there another CLI tool that can help?

This bash shell script takes multiple .pdf file inputs using zenity and stores in an array for ghostscript .pdf to .jpeg conversion.

Problem

1. need the file path stored in array with escaped spaces to go into the gs command $i
2. need the basefile name for output filename in gs command inside for loop
3. gs command needs file names with spaces escaped.
4. unable to run the gs command error command not found on line 20.

Code:

I am trying to achieve the following using a python script:

1. Read in an SVG design file (with images)
2. Manipulate the SVG file
3. Convert this to a web-ready PDF and a print-ready PDF

My problem is with the conversion of the RGB PDF to the CMYK PDF. An SVG with a 15MB photo in it will export as a 15MB RGB PDF, but then convert (using GhostScript) to a 3MB CMYK PDF. When trying ImageMagic, the resolution of the output PDF is determined by the density and I can't find how to keep the PDF's canvas size while setting the density.

So far, I have a script which reads in the SVG files and does some manipulation (add a logo using svgutils, change some text by scanning through the SVG text file). It then uses Inkscape to export the web-ready PDF (using "--export-area-page" and converting the text to paths) and a temporary PDF (using "--export-margin=X" where X is the bleed size, also converting text to paths). The temporary PDF is what I need, except it is RGB rather than CMYK. So, I then want to convert this file (Inkscape does not work with CMYK).

This is the function I am using to convert the file (it is setup with GhostScript and also I was trialling ImageMagick):

I want to save a table in R as an image that both includes math expressions in the column names and an in-line histogram from the spec_hist() function in kableExtra. Ideally, I would like the table formatted as a Latex table, but HTML would do too.

The problem I have is that when I try to save a kable HTML table, the math expressions are not properly interpreted, but the in-line histogram shows up nicely.

Meanwhile, if I try to save a kable Latex table, the math expressions are interpreted correctly, but the histogram will not appear.

Could this be a bug (two bugs?) in kableExtra? Or am I missing something?

Note that the kable HTML table looks perfectly fine (math expressions and in-line plot) in R Studio/R Markdown. But I want to save an reuse the image. The kable Latex table however never shows the in-line histogram, whether displaying in R or saved to a file.

Here is a reproducible example:

I am converting a page of a PDF to an image, and that is working fine, the issue I am having is that it is leaving out the comments or annotations on the PDF page.

When I use the TIFF format, it keeps them in, but when I output to a PNG it removes them.

How do I keep them in?

Here is the code I am using to convert the PDF:

I have a PDF file and an AI file and I want it to convert SVG.

I have installed PHP IMAGICK extension in my localhost and also installed the GHOSTSCRIPT. code which I have tried is

Background. I'd like to use camelot.read_pdf(file) which uses ghostscript.

1. The project has ghostscript package.
2. Windows 10 got installed Ghostscript 9.54.0 for Windows (64 bit). 2.1. c:\Program Files\gs\gs9.54.0\bin has been added to system PATH env variable.
3. Python 3.9 64 bit.

The required library path is c:\Program Files\gs\gs9.54.0\bin\gsdll64.dll.
But python does not “see” it. As it's, probably, not loaded in the system.