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GENPNG(1) LCOV GENPNG(1)

NAME

genpng - genpng documentation

NAME

Generate an overview image from a source file (internal tool)

1
LCOV 2.0
2026-08-03

SYNOPSIS

genpng [ -h | --help ]


 [ -v | --version ]


 [ -t | --tab-size *tabsize* ]


 [ -w | --width *width* ]


 [ -d | --dark-mode ]


 [ -o | --output-filename *output-filename* ]


 source-file


DESCRIPTION

genpng creates an overview image for a given source code file of either plain text or .gcov file format.

Note that the GD.pm Perl module has to be installed for this script to work (it may be obtained from <http://www.cpan.org>).

Note also that genpng is called from within genhtml so that there is usually no need to call it directly.

OPTIONS

Print a short help text, then exit.
Print version number, then exit.
Use tab-size spaces in place of tab.

All occurrences of tabulator signs in the source code file will be replaced by the number of spaces defined by tab-size (default is 4).

Set width of output image to width pixel.

The resulting image will be exactly width pixel wide (default is 80).

Note that source code lines which are longer than width will be truncated.

Use a light-display-on-dark-background color scheme rather than the default dark-display-on-light-background.
Write image to filename.

Specify a name for the resulting image file (default is source-file.png).


AUTHOR

Peter Oberparleiter <<Peter.Oberparleiter@de.ibm.com>>

SEE ALSO

lcov(1) <file://../man/lcov.1.html>, genhtml(1) <file://../man/genhtml.1.html>, geninfo(1) <file://../man/geninfo.1.html>, gendesc(1) <file://../man/gendesc.1.html>, gcov(1) <file://../man/gcov.1.html>

<https://github.com/linux-test-project/lcov>

Copyright

2024-2026, LCOV Project

2026-08-03 2.5.0