Configuring optimization settings in NXPowerLite for Microsoft Exchange

Our default optimization settings are recommended because they offer the best tradeoff between reduction performance and quality, and should suit most cases. However, it is possible to modify these if required by using the Settings dialog. This option is only available before you click the 'Find Mailboxes button', or after a run has completed prior to finding mailboxes for a new run.

Image Optimization tab

Resize images for display at

Documents often contain very large images, taken with digital cameras for example, which contain far more visual information than will ever be seen by a user in normal use. NXPowerLite can scale these images down to target a particular display resolution.

JPEG quality

This sets the level of quality used by NXPowerLite when recompressing JPEG files. Lower values will result in more disk space reclaimed, but will reduce the visual quality of images. We recommended using our default settings because these offer an excellent balance between space saving and quality.

Please note: The JPEG quality setting for both Microsoft Office Documents and PDF files refer to the JPEG images stored within the file. NXPowerLite does not resize any stand-alone JPEG files, only those within Office or PDF documents.

Hidden Content tab

Remove hidden content from

NXPowerLite can apply different settings depending on the length of time since an email was sent or received. Our default threshold of 1 month for hidden content removal is based on the most common customer scenarios.

Discard cropped image data

Enabling this feature will trim cropped images within documents so that only the visible portion is stored in the file. This will reduce the size of the files, but users will no longer be able to edit cropped images to reveal the areas that have been removed.

Flatten embedded objects

Enabling this feature will cause embedded documents within document files to be "flattened", converting them into pictures. This will reduce the size of the files but users will no longer be able to double-click embedded documents to edit them.

For example, a Word document might contain an embedded Excel sheet with a table of figures. Double-clicking the table would normally open Excel to edit the figures, but flattening the document converts the table to a simple picture, preventing this from happening.

Delete private application data

Applications that create PDF files, such as Adobe Photoshop or Acrobat, are able to store information within a PDF file that they can use when opening or editing the file. This information can only be used by the application which created the file and is not needed to display a PDF file. For most cases we recommend deleting this data as it will have no effect on the use of the PDF file.

Remove EXIF data

JPEG images normally include extra information (metadata) inside the file such as the device used to capture the image, the location the image was taken, etc. By default, NXPowerLite will retain this data - however, this option enables such data to be removed from each JPEG file.

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