ImgConvert

ImgConverter - Usage

A small command line utility for converting and resizing image files. 32 and 64-bit versions available, for Windows and Linux.

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Description

ImgConvert is a small command line utility for converting and resizing image files. 32 and 64-bit versions available, for Windows and Linux.

This program was made for my private use, but it may also be useful to someone.

Screenshots

ImgConverter – Usage

ImgConverter – Example

Usage

ImgConvert version 1.0 BETA [Windows 64-bit] (2017.12.29)

Usage: imgconvert.exe InputFile(s) [-o FILE] [-f EXT] [-od DIR] [-r[=X]] [-op STR] [-os STR] [-sld] [-slf] [-fs] [-lf[=FILE]] [-lfm MODE] [-pngcl X] [-bmprle=[y|n|auto]] [-jpgq X] [-jpgp] [-rs VAL] [-rsf FLT] [-if FMT] [-cc X] [-b X] [-c X] [-g X] [-gr X] [-gg X] [-gb X] [-cr X] [-cg X] [-cb X] [-ca X] [-gs] [-ic] [-fv] [-fh] [rt X] [-i] [-h] [-V] [--home] [-- InputFile(s)]

Mandatory arguments to long options are mandatory for short options too.
Options are case-sensitive. Values are case insensitive.
Options and values enclosed in square brackets are optional.
Options and input files can be placed in any order, but — (double dash) indicates the end of parsing options and all subsequent parameters are treated as filenames.
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If the option value is a negative number, you must use the “=” sign.
For example, to set the contrast to -10 you must use: -c=-10, NOT a -c -10
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Input/output options

Switch	Description
-o, –output-file=FILE	Output file name. If not specified, the name of the input file will be used.
-f, –format=EXT	Output file format (extension without dot): JPG, PNG, BMP, GIF, JP2 (except Win64 version), DDS, JNG, MNG, PGM, PPM, PFM, PSD, TGA, XPM
-od, –output-dir=DIR	Output directory. If not specified, the directory with the source file will be used.
-ov, –overwrite	Overwrite existing files. If you do not specify the `-ov` switch and the target file already exists, the program will create a new file with a numeric suffix.
-r, –recurse=[X]	Recurse subdirectories to X directory (default 100).
-op, –output-prefix=STR	Output file(s) prefix.
-os, –output-suffix=STR	Output file(s) suffix.
-sld, –dir-symlink	Accept symbolic links to directories when searching for files.
-slf, –file-symlink	Accept symbolic links to files when searching for files.
-fs, –force-save	Forces the saving of the target file, even if no operation has been performed on the source image.
-pngcl, –png-compression-level=X	PNG compression level. Integer in range 0..9 (0 – no compression, 9 – best compression).
-bmprle, –bitmap-RLE=[y\|n\|auto]	Use RLE compression in bitmaps. y – use RLE, n – dont use RLE, auto – detect best option. Default: auto
-jpgq, –jpeg-quality=X	JPEG quality. Integer in range 1..100 (1 – the worst, 100 – best qaulity)
-jpgp, –jpeg-progressive	Create progressive JPEG files.
-lf, –log-file=[FILE]	Log file name. Default imgconvert.log
-lfm, –log-mode=MODE	Logging mode: Append, Overwrite. Default: Overwrite

Image manipulation

Switch	Description
-rs, –resize=VAL	Resize image. Resize value can be given in a form: WxH, W, W%, 0xH, 0xH%. See description below.
-rsf, –resize-filter=FLT	Resize filter. Available filters: Nearest, Bilinear, Bicubic, Lanczos. Default: Lanczos.
-if, –image-format=FMT	Output image format. Available formats: Gray8, Gray8A, Gray16, Gray16A, Index8, RGB24, RGBA32, RGB48, RGBA64. See description below.
-cc, –color-count=X	Reduces the number of colors in the image to X colors. Integer in range 2..4096
-b, –brightness=X	X – brightness value. Float number in range -100..100 (0 – no change, X<0 – darker image, X>0 – brighter).
-c, –contrast=X	X – contrast value. Float number in range -100..100 (0 – no change, X<0 – less contrast, X>0 – greater contrast).
-g, –gamma=X	Gamma correction value for all color channels. Float number in range 0.01..50 (1 – no change).
-gr, –gamma-red=X	Gamma correction value for the red color channel. Float number in range 0.01..50 (1 – no change).
-gg, –gamma-green=X	Gamma correction value for the green color channel. Float number in range 0.01..50 (1 – no change).
-gb, –gamma-blue=X	Gamma correction value for the blue color channel. Float number in range 0.01..50 (1 – no change).
-cr, –channel-red=X	Sets the value of the red channel of each pixel in the image. Integer in range 0..255.
-cg, –channel-green=X	Sets the value of the green channel of each pixel in the image. Integer in range 0..255.
-cb, –channel-blue=X	Sets the value of the blue channel of each pixel in the image. Integer in range 0..255.
-ca, –channel-alpha=X	Sets the value of the alpha channel of the image. Integer in range 0..255 (0 – fully transparent, 255 – opaque).
-gs, –grayscale	Convert colors to grayscale.
-ic, –invert-colors	Invert colors.
-fv, –flip-vertical	Flip image vertically (around the horizontal axis).
-fh, –flip-horizontal	Flip image horizontally (around the vertical axis).
-rt, –rotate=X	Rotate the image by an angle of X in a clockwise direction (float number)

Information

Switch	Description
-i, –info	Show technical information about the input file.
-h, –help	Show this help.
-V, –version	Show application version.
–home	Opens the program homepage in the default browser, where you can find more detailed information.

Resize values

W and H must be positive integers, optionally terminated by the % sign.

WxH – The size of the image will be W pixels (width) per H pixels (height).
0xH – The width of the image will be calculated automatically maintaining the original proportions.
Wx0 – The height of the image will be calculated automatically maintaining the original proportions.
W – As above.
W% – The width of the image will be W percent of the width of the source image. The height of the image will be calculated automatically maintaining the original proportions.
0xH% – The height of the image will be H percent of the height of the source image. The width of the image will be calculated automatically maintaining the original proportions.
W%xH% – The width of the image will be W percent of the width of the source image. The height of the image will be H percent of the height of the source image.