Scaling an object enlarges or reduces it horizontally (along the x axis), vertically (along the y axis), or both horizontally and vertically, relative to the reference point you specify.
By default, InDesign scales strokes. For example, if you scale a selected object with a 4-point stroke by 200%, the Stroke panel indicates an 8-point stroke and the stroke visibly doubles in size. You can change the default stroke behavior by deselecting Adjust Stroke Weight When Scaling in the Transform or Control panel menu. You can change the default tracking behavior by selecting Adjust Scaling Percentage in General preferences.
To maintain the original proportions
of the object when using the Transform panel, make sure the Constrain
Proportions icon is
selected.
Choose a preset percentage value in the
Scale X Percentage or
Scale Y Percentage
pop‑up
menu.
Type a percentage value, or a specific distance (such as 10p) in the Scale X Percentage or Scale Y Percentage box, and then press Enter or Return.
If the Apply To Content preference option is selected in General preferences, scaling values are reset to 100% in the Transform panel after the object is scaled. If Adjust Scaling Percentage is selected, scaling values remain as specified (such as 125%). With multiple objects selected, the scaling value will always display as 100%; however, you can select objects individually to see the applied effect of the transform (such as 125%) if Adjust Scaling Percentage is selected.
For example, if you scale a 4-point stroke by 200% when this option is turned on, the stroke weight becomes 8 points. If you turn off this option, the object doubles in size but its stroke weight remains 4 points.
If this option is turned on and you scale an object disproportionally, InDesign applies the smallest stroke weight to all sides. For example, suppose that you scale a selected object with a 4-point stroke only in the X direction by 200%. Instead of applying an 8-point stroke in the X direction and a 4-point stroke in the Y direction, InDesign applies the smaller value (4 points) to all sides.
In some cases, you may want to reset the Scale X and Scale Y values of an object to 100% without resizing the object. For example, you may have opened a document from a previous version of InDesign that has non-100% scaling values, or you may have scaled an object with the Adjust Scaling Percentage preference setting selected. When you choose this command, the scaling values for all selected frames are reset to 100%. Choosing this command does not change the size or appearance of objects.