---
name: "genpng"
section: "1"
platform: "linux"
package: "lcov"
version: "2.6-1"
release: "Arch Linux 2026-11-01"
platforms: ["linux"]
url: "https://new.carta.tech/genpng"
---

# genpng(1)

genpng documentation

## NAME

genpng - genpng documentation

## NAME

- **genpng**

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

- **Manual section**

  1

- **Manual group**

  LCOV 2.0

- **Date**

  2026-10-03

## 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

- **-h**, **–help**

  Print a short help text, then exit.

- **-v**, **–version**

  Print version number, then exit.

- **-t** *tab-size*, **–tab-size** *tab-size*

  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).

- **-w** *width*, **–width** *width*

  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.

- **-d**, **–dark-mode**

  Use a light-display-on-dark-background color scheme rather than the default dark-display-on-light-background.

- **-o** *filename*, **–output-filename** *filename*

  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)](/lcov/1.md) \<file://../man/lcov.1.html\>**, **[genhtml(1)](/genhtml/1.md) \<file://../man/genhtml.1.html\>**, **[geninfo(1)](/geninfo/1.md) \<file://../man/geninfo.1.html\>**, **[gendesc(1)](/gendesc/1.md) \<file://../man/gendesc.1.html\>**, **[gcov(1)](/gcov/1.md) \<file://../man/gcov.1.html\>**

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

## Copyright

2024-2026, LCOV Project