To improve the report readability, we can resize the height and width of specific column and row or the over all tablix data region.
Change height property:
To change the height of the tablix region , place the mouse pointer in the CenterTop or CenterBottom position of the tablix selection line.
Use CenterBottom to increase height towards downward direction or to decrease height towards upward direction,

Use CenterTop to increase height towards upward direction or to decrease height towards downward direction,

Change width property:
To change the width of the tablix region , place the mouse pointer in the RightCenter or LeftCenter position of the tablix selection line.
Use RightCenter to resize the width outwards or inwards in right side direction,

Use LeftCenter to resize the width outwards or inwards in left direction,

Change width and height proportionally:

LeftTop or RightTop or LeftBottom or RightBottom position on the data region. Now, the resizer arrow will be enabled in the respective position like below,



Height and Width property of the tablix data region.




Width property of the respective cell.

To increase or decrease the column using touch resizer, Tap on the respective column gripper in the screen. Now, a bubble will be enabled in the right side of the column like below.

Now, drag the bubble horizontally to adjust the column width.




Height property of the respective cell.

To increase or decrease the row height using touch resizer, Tap on the respective row gripper in the screen. Now, a bubble will be enabled in the bottom of the row like below.

Now, drag the bubble vertically to adjust the row height.
