有什么办法可以用golang将PDF转换为jpeg吗？

Question

I am currently rewriting my "old" Python-based Chatbots into golang. One issue I came across was that I can´t convert a PDF into jpeg. Which I´d like to do so I can send it into a chat easily.

Already tried this with bimg (did not work at all) and imagemagick (gopkg.in/gographics/imagick.v3/imagick) as provided in this answer to another thread: "https://stackoverflow.com/a/47520596/7502507"

imagick.Initialize()

defer imagick.Terminate()

mw := imagick.NewMagickWand()

defer mw.Destroy()

mw.ReadImage(pdf)

mw.SetIteratorIndex(0) // This being the page offset

mw.SetImageFormat("jpg")

mw.WriteImage(image)

It does not produce a jpg at all, it just gives me the error

ERROR_POLICY: attempt to perform an operation not allowed by the security policy `PDF' @ error/constitute.c/IsCoderAuthorized/408

How can I make this work? I can´t seem to edit the security settings for this.

Any help is appreciated!

Answer 1

This is not something I have done. However I was recently looking at this golang cli tool for working with pdf and they have an extract to image feature. You could have a dig into the code and possible work it out from there:

https://github.com/hhrutter/pdfcpu