# How to unset default 'compress' option during save

**URL:** <https://discourse.slicer.org/t/how-to-unset-default-compress-option-during-save/4488>\
**Category:** Support\
**Tags:** file-export\
**Created:** [October 22, 2018, 3:37pm UTC](https://discourse.slicer.org/t/how-to-unset-default-compress-option-during-save/4488 "2018-10-22T15:37:10Z")\
**Posts on this page:** 1\
**Showing post:** 18

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**Author:** ![lassoan](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/lassoan/32/13_2.png) [@lassoan](https://discourse.slicer.org/u/lassoan)\
**Post date:** [October 29, 2018, 2:32pm UTC](https://discourse.slicer.org/t/how-to-unset-default-compress-option-during-save/4488/18 "2018-10-29T14:32:36Z")

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Using a low compression level would make a lot of sense, as one of the main reasons I would keep compression enabled is to deflate blank voxels around images that have a non-rectangular shape.

Is there an API to change compression level in ITK IO classes?

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