Is converting XWD to PNG not supported?

[wintonzheng]

ImageMagick version

7.1.1-36

Operating system

Linux

Operating system, version and so on

macos, linux, ubuntu - Any version so far

Description

Getting this error:

magick: no decode delegate for this image format `XWD' @ error/constitute.c/ReadImage/746.

Steps to Reproduce

xwd -root -out screenshot.xwd
magick screenshot.xwd screenshot.png

Images

No response

[urban-warrior]

ImageMagick depends on the X11 delegate library to support images in the XWD format. Type magick --version and see if x is in the list of delegates.

[wintonzheng]

ImageMagick depends on the X11 delegate library to support images in the XWD format. Type magick --version and see if x is in the list of delegates.

i've been testing it with:

• the FROM python:3.11 docker image (debian)
• apt-get install libpq5 xvfb x11-apps
• running Xvfb :99 -screen 0 ...

not sure why x delegate is not installed.

I found a workaround:
xwd -root | xwdtopnm | pnmtopng > {screenshot.png}