/ 
App-ImageMagickUtils-0.021
River stage one • 1 direct dependent • 1 total dependent
/ App::ImageMagickUtils

NAME

App::ImageMagickUtils - Utilities related to ImageMagick

VERSION

This document describes version 0.021 of App::ImageMagickUtils (from Perl distribution App-ImageMagickUtils), released on 2023-06-26.

DESCRIPTION

This distribution includes the following CLI utilities related to ImageMagick:

1. calc-image-resized-size
2. convert-image-to
3. convert-image-to-jpg
4. convert-image-to-pdf
5. convert-image-to-png
6. downsize-image
7. image-resize-notation-to-human
8. img2jpg
9. img2pdf
10. img2png
11. jpg2png
12. png2jpg

FUNCTIONS

convert_image_to

Usage:

convert_image_to(%args) -> [$status_code, $reason, $payload, \%result_meta]

Convert images using ImageMagick's 'convert' utility, with multiple file support and automatic output naming.

This is a simple wrapper to ImageMagick's convert utility to let you process multiple files using a single command:

% convert-image-to --to pdf *.jpg

is basically equivalent to:

% for f in *.jpg; do convert "$f" "$f.pdf"; done

This function is not exported.

Arguments ('*' denotes required arguments):

  • delete_original => bool

    Delete (unlink) the original file after downsizing.

    See also the trash_original option.

  • files* => array[filename]

    (No description)

  • quality => int (default: 92)

    Quality setting (for JPEG/PNG), 1 (best compression, worst quality) to 100 (least compression, best quality).

  • to* => str

    (No description)

  • trash_original => bool

    Trash the original file after downsizing.

    This option uses the File::Trash::FreeDesktop module to do the trashing. Compared to deletion, with this option you can still restore the trashed original files from the Trash directory.

    See also the delete_original option.

Returns an enveloped result (an array).

First element ($status_code) is an integer containing HTTP-like status code (200 means OK, 4xx caller error, 5xx function error). Second element ($reason) is a string containing error message, or something like "OK" if status is 200. Third element ($payload) is the actual result, but usually not present when enveloped result is an error response ($status_code is not 2xx). Fourth element (%result_meta) is called result metadata and is optional, a hash that contains extra information, much like how HTTP response headers provide additional metadata.

Return value: (any)

convert_image_to_jpg

Usage:

convert_image_to_jpg(%args) -> [$status_code, $reason, $payload, \%result_meta]

Convert images to JPG using ImageMagick's 'convert' utility.

This is a wrapper to convert-image-to, with --to set to jpg:

% convert-image-to-pdf *.png

is equivalent to:

% convert-image-to --to jpg *.png

which in turn is equivalent to:

% for f in *.png; do convert "$f" "$f.jpg"; done

This function is not exported.

Arguments ('*' denotes required arguments):

  • delete_original => bool

    Delete (unlink) the original file after downsizing.

    See also the trash_original option.

  • files* => array[filename]

    (No description)

  • quality => int (default: 92)

    Quality setting (for JPEG/PNG), 1 (best compression, worst quality) to 100 (least compression, best quality).

  • trash_original => bool

    Trash the original file after downsizing.

    This option uses the File::Trash::FreeDesktop module to do the trashing. Compared to deletion, with this option you can still restore the trashed original files from the Trash directory.

    See also the delete_original option.

Returns an enveloped result (an array).

First element ($status_code) is an integer containing HTTP-like status code (200 means OK, 4xx caller error, 5xx function error). Second element ($reason) is a string containing error message, or something like "OK" if status is 200. Third element ($payload) is the actual result, but usually not present when enveloped result is an error response ($status_code is not 2xx). Fourth element (%result_meta) is called result metadata and is optional, a hash that contains extra information, much like how HTTP response headers provide additional metadata.

Return value: (any)

convert_image_to_pdf

Usage:

convert_image_to_pdf(%args) -> [$status_code, $reason, $payload, \%result_meta]

Convert images to PDF using ImageMagick's 'convert' utility.

This is a wrapper to convert-image-to, with --to set to pdf:

% convert-image-to-pdf *.jpg

is equivalent to:

% convert-image-to --to pdf *.jpg

which in turn is equivalent to:

% for f in *.jpg; do convert "$f" "$f.pdf"; done

This function is not exported.

Arguments ('*' denotes required arguments):

  • delete_original => bool

    Delete (unlink) the original file after downsizing.

    See also the trash_original option.

  • files* => array[filename]

    (No description)

  • trash_original => bool

    Trash the original file after downsizing.

    This option uses the File::Trash::FreeDesktop module to do the trashing. Compared to deletion, with this option you can still restore the trashed original files from the Trash directory.

    See also the delete_original option.

Returns an enveloped result (an array).

First element ($status_code) is an integer containing HTTP-like status code (200 means OK, 4xx caller error, 5xx function error). Second element ($reason) is a string containing error message, or something like "OK" if status is 200. Third element ($payload) is the actual result, but usually not present when enveloped result is an error response ($status_code is not 2xx). Fourth element (%result_meta) is called result metadata and is optional, a hash that contains extra information, much like how HTTP response headers provide additional metadata.

Return value: (any)

convert_image_to_png

Usage:

convert_image_to_png(%args) -> [$status_code, $reason, $payload, \%result_meta]

Convert images to JPG using ImageMagick's 'convert' utility.

This is a wrapper to convert-image-to, with --to set to png:

% convert-image-to-png *.jpg

is equivalent to:

% convert-image-to --to png *.jpg

which in turn is equivalent to:

% for f in *.jpg; do convert "$f" "$f.png"; done

This function is not exported.

Arguments ('*' denotes required arguments):

  • delete_original => bool

    Delete (unlink) the original file after downsizing.

    See also the trash_original option.

  • files* => array[filename]

    (No description)

  • quality => int (default: 92)

    Quality setting (for JPEG/PNG), 1 (best compression, worst quality) to 100 (least compression, best quality).

  • trash_original => bool

    Trash the original file after downsizing.

    This option uses the File::Trash::FreeDesktop module to do the trashing. Compared to deletion, with this option you can still restore the trashed original files from the Trash directory.

    See also the delete_original option.

Returns an enveloped result (an array).

First element ($status_code) is an integer containing HTTP-like status code (200 means OK, 4xx caller error, 5xx function error). Second element ($reason) is a string containing error message, or something like "OK" if status is 200. Third element ($payload) is the actual result, but usually not present when enveloped result is an error response ($status_code is not 2xx). Fourth element (%result_meta) is called result metadata and is optional, a hash that contains extra information, much like how HTTP response headers provide additional metadata.

Return value: (any)

downsize_image

Usage:

downsize_image(%args) -> [$status_code, $reason, $payload, \%result_meta]

Reduce image size, by default via compressing to JPEG quality 40 and downsizing to 1024p.

This utility uses convert utility to compress an image into JPEG with default quality of 40 and downsized to 1024p (shortest side to 1024px).

Output filenames are:

ORIGINAL_NAME.q40.jpg

or (if downsizing is done):

ORIGINAL_NAME.1024p-q40.jgp

This function is not exported.

This function supports dry-run operation.

Arguments ('*' denotes required arguments):

  • delete_original => bool

    Delete (unlink) the original file after downsizing.

    See also the trash_original option.

  • downsize_to => str (default: 1024)

    Downsizing will only be done if the input image's shortest side is indeed larger then the target downsize.

    To disable downsizing, set --downsize-to to '' (empty string), or specify on --dont-downsize on the CLI.

  • files* => array[filename]

    (No description)

  • quality => int (default: 40)

    Quality setting (for JPEG/PNG), 1 (best compression, worst quality) to 100 (least compression, best quality).

  • skip_downsized => bool (default: 1)

    Skip previously downsized images.

    By default, when given a filename that looks like it's already downsized, e.g. foo.1024-q40.jpg or foo.q40.jpg, will skip downsizing. The --no-skip-downsized option will process such filenames nevertheless.

  • skip_whatsapp => bool (default: 1)

    Skip WhatsApp images.

    By default, assuming that WhatsApp already compresses images, when given a filename that matches a WhatsApp image filename, e.g. IMG-20220508-WA0001.jpg (will be checked using Regexp::Pattern::Filename::Image::WhatsApp), will skip downsizing. The --no-skip-whatsapp option will process such filenames nevertheless.

  • trash_original => bool

    Trash the original file after downsizing.

    This option uses the File::Trash::FreeDesktop module to do the trashing. Compared to deletion, with this option you can still restore the trashed original files from the Trash directory.

    See also the delete_original option.

Special arguments:

  • -dry_run => bool

    Pass -dry_run=>1 to enable simulation mode.

Returns an enveloped result (an array).

First element ($status_code) is an integer containing HTTP-like status code (200 means OK, 4xx caller error, 5xx function error). Second element ($reason) is a string containing error message, or something like "OK" if status is 200. Third element ($payload) is the actual result, but usually not present when enveloped result is an error response ($status_code is not 2xx). Fourth element (%result_meta) is called result metadata and is optional, a hash that contains extra information, much like how HTTP response headers provide additional metadata.

Return value: (any)

HOMEPAGE

Please visit the project's homepage at https://metacpan.org/release/App-ImageMagickUtils.

SOURCE

Source repository is at https://github.com/perlancar/perl-App-ImageMagickUtils.

AUTHOR

perlancar <perlancar@cpan.org>

CONTRIBUTING

To contribute, you can send patches by email/via RT, or send pull requests on GitHub.

Most of the time, you don't need to build the distribution yourself. You can simply modify the code, then test via:

% prove -l

If you want to build the distribution (e.g. to try to install it locally on your system), you can install Dist::Zilla, Dist::Zilla::PluginBundle::Author::PERLANCAR, Pod::Weaver::PluginBundle::Author::PERLANCAR, and sometimes one or two other Dist::Zilla- and/or Pod::Weaver plugins. Any additional steps required beyond that are considered a bug and can be reported to me.

COPYRIGHT AND LICENSE

This software is copyright (c) 2023, 2022, 2021, 2020 by perlancar <perlancar@cpan.org>.

This is free software; you can redistribute it and/or modify it under the same terms as the Perl 5 programming language system itself.

BUGS

Please report any bugs or feature requests on the bugtracker website https://rt.cpan.org/Public/Dist/Display.html?Name=App-ImageMagickUtils

When submitting a bug or request, please include a test-file or a patch to an existing test-file that illustrates the bug or desired feature.