Image Preparer, v1.3.0

The utility for image preparation.

Add the mode without processing of images and improve logging of image changes.

the mode without processing of images, only with search of them and check of their size;
logging of image changes:
- logging of an image number and name at the beginning of processing;
- fix the bug with zero original size on logging of a change of image sizes;
- remove redundant logging:
  - of a total change of image sizes;
  - of a global total change of image sizes.

search of images:
- recursive search (optionally);
- filtering by a pattern of image filenames (uses Perl-compatible regular expressions (PCREs));
resizing of images larger than the specified size with the Lanczos filter (optionally);
optimization of images (optionally):
- in PNG format:
  - via the pngquant tool;
  - via the OptiPNG tool;
  - via the advpng tool from the AdvanceCOMP project;
- in JPEG format:
  - via the jpegoptim tool;
the mode without processing of images, only with search of them and check of their size;
logging of image changes:
- logging of an image number and name at the beginning of processing;
- logging of a change of an image resolution on resizing;
- logging of a change of an image size:
  - on the following operations:
    - resizing;
    - optimization;
  - logging of a total change of image sizes:
    - total change after all the optimization steps;
    - total change after both resizing and optimization operations;
    - total change for all images together;
  - logging of a saved image size in percent.

$ image_preparer.bash -v | --version
$ image_preparer.bash -h | --help
$ image_preparer.bash [options] [<path>]

Options:

-v, --version — show the version;
-h, --help — show the help;
-n PATTERN, --name PATTERN — a pattern of image filenames (uses Perl-compatible regular expressions (PCREs); default: (?i)\.(png|jpe?g));
-r, --recursive — recursive search of images;
-w WIDTH, --width WIDTH — a maximum width of images (default: 640);
--no-process — don't process images, only search for them and check their size;
--no-resize — don't resize images;
--no-optimize — don't optimize images.