195 lines
6.3 KiB
Markdown
195 lines
6.3 KiB
Markdown
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## CaesiumCLT Usage
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### Options
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##### Compression (at least one is required)
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- -q, --quality <QUALITY>
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Sets compression quality between 0 and 100. Higher the value, better the quality and bigger the file size.
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- --lossless
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Perform lossless compression. Some file formats may not support this or result in bigger file sizes.
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- --max-size <MAX_SIZE>
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Attempts to compress the image to the nearest size in bytes without exceeding it. If the requested size is too small,
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it will output the smallest possible result.
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##### Advanced compression
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- --png-opt-level <PNG_OPT_LEVEL>
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Sets the optimization level for PNG files. Higher values result in better compression but take longer to complete.
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Possible values are between 0 and 6. Default is 3.
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- --zopfli
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Use zopfli when optimizing PNG files. It may take a very long time to complete, especially if the application is not
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build in release mode.
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##### Metadata
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- -e, --exif
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Keeps EXIF metadata info during compression, if present. This can slightly increase the output file size.
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- --keep-dates
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Keeps the original last modified and last accessed date information, if possible.
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##### Resizing
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- --width <WIDTH>
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Sets the width of the output image. If height is not set, it will preserve the aspect ratio. Can't be used with
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`--long-edge` or `--short-edge`.
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- --height <HEIGHT>
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Sets the height of the output image. If width is not set, it will preserve the aspect ratio. Can't be used with
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`--long-edge` or `--short-edge`.
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- --long-edge <LONG_EDGE>
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Sets the size of the longest edge of the image. It is aware of rotation metadata. Can't be used with `--width` or
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`--height` or `--short-edge`.
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- --short-edge <SHORT_EDGE>
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Sets the size of the shortest edge of the image. It is aware of rotation metadata. Can't be used with `--width` or
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`--height` or `--long-edge`.
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##### Destination
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- -o, --output <OUTPUT>
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Sets the output folder. If the folder does not exist, it will be created. Can't be used with `--same-folder-as-input`.
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- --same-folder-as-input
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Sets the output folder to be the same as the input folder. WARNING: this can potentially overwrite the original files
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if a suffix is not set. Overwritten files CANNOT be recovered.
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- --suffix <SUFFIX>
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Adds a suffix to the output filename, before the file extension.
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- -S, --keep-structure
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Preserves the folder tree structure of the input files. Can be used only with `-R`.
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- -o, --overwrite <OVERWRITE>
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Sets the overwrite policy if the output file already exists. Possible values are:
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- `all`: Always overwrite
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- `never`: Never overwrite
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- `bigger`: Overwrite only if the file to be overwritten is bigger
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- --format <FORMAT>
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Converts the original image to the selected format. Possible values are:
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- `jpeg`
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- `png`
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- `webp`
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- `tiff`
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- `original` (default, no changes)
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##### Other
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- -R, --recursive
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If the input is a folder, scan its subfolders too.
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- -d, --dry-run
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Do not write output files, only simulate the process.
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- --threads <THREADS>
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Specify the number of parallel jobs. The maximum is the number of processors available. `0` means that the application
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will try to guess the maximum number of parallel jobs available. Default is `0`.
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- -Q, --quiet
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Suppress all output. Overrides `--verbose`.
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- --verbose <VERBOSE>
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Select how much output you want to see. Possible values are:
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- `quiet`: Suppress all output
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- `progress`: Show only progress and final results
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- `warnings-and-errors`: Show also skipped and error messages
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- `all`: Print all
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- -h, --help
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Print help. A summary can be seen with `-h`.
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- -V, --version
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Print version.
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### Full help
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```
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Usage: caesiumclt [OPTIONS] <--quality <QUALITY>|--lossless|--max-size <MAX_SIZE>> <--output <OUTPUT>|--same-folder-as-input> [FILES]...
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Arguments:
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[FILES]...
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Options:
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-q, --quality <QUALITY>
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sets output file quality between [0-100]
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--lossless
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perform lossless compression
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--max-size <MAX_SIZE>
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set the expected maximum output size in bytes
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--width <WIDTH>
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width of the output image, if height is not set will preserve aspect ratio
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--height <HEIGHT>
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height of the output image, if width is not set will preserve aspect ratio
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--long-edge <LONG_EDGE>
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sets the size of the longest edge of the image
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--short-edge <SHORT_EDGE>
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sets the size of the shortest edge of the image
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-o, --output <OUTPUT>
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output folder
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--same-folder-as-input
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sets the output folder to be the same as the input folder, overwrites original files
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--format <FORMAT>
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convert to the selected output format, or keep the original
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[default: original]
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[possible values: jpeg, png, webp, tiff, original]
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--png-opt-level <PNG_OPT_LEVEL>
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select level for PNG optimization, between [0-6]
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[default: 3]
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--zopfli
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use zopfli when optimizing PNG files (it may take a very long time to complete)
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-e, --exif
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keeps EXIF info during compression
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--keep-dates
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keep original file date information
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--suffix <SUFFIX>
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add a suffix to the output filename
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-R, --recursive
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if input is a folder, scan subfolders too
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-S, --keep-structure
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keep the folder structure, can be used only with -R
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-d, --dry-run
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do not write output files
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--threads <THREADS>
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specify the number of parallel jobs (max is the number of processors available)
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[default: 0]
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-O, --overwrite <OVERWRITE>
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overwrite policy
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[default: all]
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Possible values:
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- all: Always overwrite
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- never: Never overwrite
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- bigger: Overwrite only if the file to be overwritten is bigger
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-Q, --quiet
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suppress all output
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--verbose <VERBOSE>
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select how much output you want to see
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[default: progress]
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Possible values:
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- quiet: Suppress all output
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- progress: Show only progress and final results
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- warnings-and-errors: Show also skipped and error messages
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- all: Print all
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-h, --help
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Print help (see a summary with '-h')
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-V, --version
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Print version
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```
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