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Optimize for Web - compressing images in batch mode

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Batch Optimize for Web task
Optimize for Web

Description Optimizes the image to reduce its size by removing redundant information and/or by compressing graphical information. Images optimized in this way will be loaded faster on the site.
This task can save to JPEG, PNG, GIF, and WebP format. When saving to JPEG, MozJPEG library is used for the best results.

Parameters:
File Path Defines the folder for saving the image. You can specify either an absolute path by clicking the folder button, or a relative path by using the tags. For more detailed information, see Folder parameter in Save As taskSave As task.

If File Exists Defines an action if a file with the specified path already exists. For more detailed information, see If file exists parameter in Save As taskSave As task.

File Format Defines the image type. You can select either JPEG, GIF, PNG, WebP or  Same format value.

Profile Specifies the optimization profile. Available values are:
  • High quality - image size is reduced slightly (in some cases may even increased), but the processing is very fast and the quality remains very high.
  • Medium quality - is a compromise between the image quality and size.
  • Low quality - minimizes the size of the image while leaving the quality at an acceptable level.
  • Custom quality - gives the user the opportunity to set the parameters of quality and compression (For experienced users).

JPEG: Color Space Defines the color space for saving the JPEG image. For more detailed information, see JPEG: Color Space parameter in Save As taskSave As task.

JPEG: DCT Method Defines the discrete cosine transform (DCT) method. For more detailed information, see JPEG: DCT Method parameter in Save As taskSave As task.

JPEG: Chroma Subsampling Defines chroma subsampling, which governs the quality of the resulting JPEG image. For more detailed information, see JPEG: Chroma subsampling parameter in Save As taskSave As task.

JPEG: Optimal Huffman If this option is turned on, the encoder will generate a Huffman Table optimized for the actual frequency distribution in the image.

JPEG: Quality Defines the quality of the resulting image in the range from 1 to 100. For more detailed
information, see JPEG: Quality parameter in Save As taskSave As task.

JPEG: Remove All Markers Removes all markers within a JPEG file (from APP0 to APP15 and COM). JPEG markers can contain text, objects and images.

JPEG: Progressive If checked, turns on a progressive scan of image.

JPEG: Blur Specifies the blur factor from 0 to 100. If this parameter exceeds 0, the compressor blurs the image before compressing it. This improves the level of compression.

PNG: Compression Defines the lossless image compression rate from 0 (no compression) to 9 (the best compression), with higher values resulting in longer operation of the encoder.

PNG: Filter Defines a filter to be applied before encoding the image. For more detailed information, see PNG: Filter parameter in Save As taskSave As task.

PNG: Transparency If this option is turned off, the alpha channel is not stored.

PNG: Use Palette If checked, then the image color palette is used while encoding. The maximum number of colors in the palette is 256.

PNG: Colors Count The number of colors in the palette. Possible values are from 2 to 256.

PNG: Interlaced If this option is checked, the image will be decoded interlaced. For larger images, and slow Internet connection, it provides an opportunity to evaluate the image even before it was fully downloaded.

PNG: Remove PNG Text Fields Removes the text embedded in the PNG.

PNG: Quality Specifies the quality of the resulting image. If the value is less than 100, worsen an image quality by reducing the number of colors.

GIF: Colors Count The number of colors in the GIF-image. Possible values are from 2 to 256.

GIF: Transparency If this option is turned on, then GIF-image is saved with transparency.

GIF: Interlaced If this option is checked, the image will be decoded interlaced.

Remove All Metadata Removes all meta information in the file (all text fields, EXIF, IPTC, XMP data etc.).
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