Problems when convert PDF to png some characteres are converted on black boxes

[cyberfido]

ImageMagick version

6.9.12-32

Operating system

Linux

Operating system, version and so on

Ubuntu 20.04

Description

I'm running this command
convert -define bmp:format=bmp3 fail_symbol.pdf test.png
then I added a -verbose to get the information on what is imagemagick sending to ghostscript, and this is the result command:

gs -dQUIET -dSAFER -dBATCH -dNOPAUSE -dNOPROMPT -dMaxBitmap=500000000 -dAlignToPixels=0 -dGridFitTT=2 '-sDEVICE=pngalpha' -dTextAlphaBits=4 -dGraphicsAlphaBits=4 '-r72x72' -dPrinted=false -sOutputFile=test.png fail_symbol.pdf

if I execute that, I got a incorrect output:

with some characters like a blackbox, then if I drop the value -dPrinted=false from the script I got the correct results, now my question is how can I configure imagemagick delegates or which parameter do I have to send to ghostscript to avoid -dPrinted=false on the script

Steps to Reproduce

run the command

convert -define bmp:format=bmp3 fail_symbol.pdf test.png

with the PDF Attached

Images

fail_symbol.pdf

[fmw42]

I do not think that in your command -define bmp:format=bmp3 will do anything for the PNG output. Also the image you post is not what I get from running

convert fail_symbol.pdf -alpha off test.png

What is your Ghostscript version? I am running IM 6.9.12-96 with GS 9.56.1 on Mac OSX. I have see issues with GS 10.x and others have had to downgrade to 9.x.x

If you really need to modify the gs command, I believe that you can do that in the delegates.xml file for PS/PSF/EPS/PDF.

[cyberfido]

Hi, I'm using IM 6.9.12-32 and gs 9.50, I tried to modify the delegates file, but didn't work

[fmw42]

IM 6.9.12-32 is old as is GS 9.50. Perhaps you should upgrade one or both.

[cyberfido]

I tried with IM 6.9.7-10 and GS 9.26 and got correct results, I will check with newer versions to check if it works

[cyberfido]

Problem solved with IM 6.9.7-10 and GS 10.02.1 Working on Ubuntu 20.0406 Thanks