# How to compressing / optimizing data image in paraview?

**URL:** https://discourse.paraview.org/t/how-to-compressing-optimizing-data-image-in-paraview/10868
**Category:** ParaView Support
**Created:** [November 28, 2022, 2:59am UTC](https://discourse.paraview.org/t/how-to-compressing-optimizing-data-image-in-paraview/10868 "2022-11-28T02:59:22Z")
**Posts on this page:** 3
**Page:** 1

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### Author: ![1997best](https://discourse.paraview.org/user_avatar/discourse.paraview.org/1997best/32/10329_2.png) [@1997best](https://discourse.paraview.org/u/1997best)
#### Post date: [November 28, 2022, 2:59am UTC](https://discourse.paraview.org/t/how-to-compressing-optimizing-data-image-in-paraview/10868/1 "2022-11-28T02:59:22Z")

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Hi,

I try to open my vtu file in Open SUSE. Ryzen 5800X / 64GB / GTX1080  
My vtu file is quite large(\>5GB) and has many nodes (~ 1e7).  
When I open it and try to check my data graphically, it makes my computer too slow.

 ![1](https://discourse.paraview.org/uploads/default/original/2X/c/c3ee2911d9332d5118be109bfce2f65585df8899.png)

So, is there any technique to check or control large file?  
I want to throw out some of my data or change sampling resolution.

Thank you in advance.

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### Author: ![spyridon97](https://discourse.paraview.org/user_avatar/discourse.paraview.org/spyridon97/32/11569_2.png) [@spyridon97](https://discourse.paraview.org/u/spyridon97)
#### Post date: [November 28, 2022, 8:56pm UTC](https://discourse.paraview.org/t/how-to-compressing-optimizing-data-image-in-paraview/10868/2 "2022-11-28T20:56:23Z")

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Memory Wise, you can’t do anything.  
To graphically make the interaction faster you can try to adjust the LOD Threshold value in Edit-\>Settings-\>RenderView. The lower the LOD Threshold the smoother the rotations will be.

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### Author: ![Christos\_Tsolakis](https://discourse.paraview.org/user_avatar/discourse.paraview.org/christos_tsolakis/32/4450_2.png) [@Christos\_Tsolakis](https://discourse.paraview.org/u/Christos_Tsolakis)
#### Post date: [November 28, 2022, 10:25pm UTC](https://discourse.paraview.org/t/how-to-compressing-optimizing-data-image-in-paraview/10868/3 "2022-11-28T22:25:03Z")

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> I want to throw out some of my data or change sampling resolution.

You can downsample your data or even sample around a region of interest and disregard the rest using [ResampleToImage](https://docs.paraview.org/en/latest/UsersGuide/filteringData.html?#resample-to-image)