Altering ImageMagick policy.xml when installed using Homebrew about pdf2pptx

[ashafaei]

I'm not exactly sure what's the problem here, but I just tested this solution and it works. (@justin-ashworth-research @oliversheridanmethven )

Install Imagemagick from brew:

> brew reinstall imagemagick

Then edit

/usr/local/Cellar/imagemagick/7.0.11-9/etc/ImageMagick-7/policy.xml

the version numbers might be different for you. As of now, this is the latest one.

Then add

<policy domain="coder" rights="read" pattern="PDF" />

just before

</policymap>

so that you'll have

<policy domain="coder" rights="read" pattern="PDF" />
</policymap>

and it'll work.

@oliversheridanmethven there seems to be a problem with your installation

convert: unable to load module '/usr/local/Cellar/imagemagick/7.0.10-29/lib/ImageMagick/modules-Q16HDRI/coders/pdf.la': file not found @ error/module.c/OpenModule/1287.

It's unable to find a library file. Reinstalling imagemagick with

> brew reinstall imagemagick

might solve your problem.

[justin-ashworth-research]

I have encountered the same error as above while trying to use Imagemagick 'convert' for .pdf to .png, with a Homebrew installation of Imagemagick, ghostscript, etc. I have not fixed it. This does not appear to relate to the 'policy fix' shown above though. Those lines appear commented out, anyway.