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Compression Settings Panel Guide

The Compression Settings Panel is where you fine-tune how your images will be compressed in Mass Image Compressor (MIC). This guide breaks down each setting, from quality adjustments to resizing options, helping you understand how to achieve the perfect balance between file size and image quality for your needs.

1. QUALITY

  • Description: Adjust the quality of the output image.
  • Range: 10 (lowest quality) to 100 (highest quality).
  • Quick Quality Presets:
    • Low (30%): Suitable for significant size reduction with noticeable quality loss.
    • Medium (60%): Balanced between quality and size.
    • High (80%): Good quality with moderate file size.
    • Crazy (95%): Maximum quality, nearly lossless but larger file size.
  • Applicable Formats: JPEG, WebP and HEIC only.
  • Note:
    • PNG/GIF/TIFF images do not support lossy compression in Mass Image Compressor and will maintain their original quality regardless of the quality slider settings.
    • Set quality above 96% for lossless WebP format.

2. DIMENSIONS

  • Description: Control the resizing and scaling of images.
  • Options:
    • Same Dimension: The image retains its original dimensions without any resizing.
    • Fit within Long Edge: Most recommended for bulk operations. Choose ‘Long Edge’ to automatically resize your image’s longest side, so you don’t have to worry about picking height or width yourself.
    • Fit within Width: Resizes the image to fit within the specified width, maintaining the aspect ratio.
    • Fit within Height: Resizes the image to fit within the specified height, maintaining the aspect ratio.
    • Force Fixed Width: Forces the output width to a fixed value, and adjusts the height proportionally. Be cautious, as this might increase the image size.
    • Force Fixed Height: Forces the output height to a fixed value, and adjusts the width proportionally. Similar to Fixed Width, this may increase the image size.
    • Shrink by %: Shrinks the image by a specified percentage for both width and height. For instance, a 50% setting will reduce a 1000×1000 image to 500×500, effectively reducing the total pixels to a quarter of the original.
  • For Print Options (only available to Pro Subscription)
    • Shrink to Frame: Reduces to given Print Size at 300 dpi
    • Scale to Fit Frame: Forces the output width to fix the given Print Size. This may increase the image size but will not increase the quality of the image.
  • Important: In the Free Version of MIC, if both height and width are set to be greater than 800px, the compressed image will include a watermark in the bottom right corner. Users with the Standard Subscription do not get this watermark.

3. SAVE AS

Format

  • Description: Choose the output file format for the compressed images.
  • Options:
    • Don’t Change: Maintains the original file format. If the input format is not one of the supported output formats (JPEG, PNG, WebP, GIF, TIFF, HEIC), the output format will default to JPG.
    • JPEG
    • PNG
    • WebP
    • GIF
    • TIFF
    • HEIC
    • MP4 (for MOV and MP4 inputs)

Metadata

  • Description: Control how metadata is copied from the original image to the compressed image.
  • Options for Standard Subscription:
    • None: No metadata is copied; all metadata is stripped from the compressed image.
    • All But Sensitive: Copies all metadata except sensitive information like GPS location. This is a subscriber-only option.
    • All: Copies all metadata from the original image.
  • WebP images do NOT support EXIF metadata reliably so MIC doesn’t copy metadata to WebP images. Regardless, WebP is a web format and shouldn’t have any metadata to keep the image size smallest unless you are a photographer.

“Drop Output Folder here”

  • For convenience, you can drag and drop your desired output folder into the designated “Drop Output Folder Here” area in the settings panel, eliminating the need to use the “Select Output Folder” button.

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