How do I resize all content in InDesign?

To resize all content in InDesign proportionally, especially the content inside a frame, use InDesign's shortcut keys while resizing. These shortcuts help resize from the center point, and scale the content within the frame proportionally.

The video referenced highlights three important shortcuts and combinations you should learn to resize objects and their contents effectively:

Unfortunately, the video snippets provided don't explicitly state the three shortcuts without watching the entire video. However, based on common InDesign practices for proportional resizing from the center, here's what they likely are:

Resizing Proportionally: Hold Shift while dragging a corner handle of the frame. This ensures the width and height maintain their original ratio.
Resizing from the Center: Hold Alt (Windows) or Option (Mac) while dragging a corner handle. This keeps the center point fixed, scaling the object outward or inward from the middle.
Resizing Content Proportionally Inside the Frame: Hold Ctrl + Shift (Windows) or Command + Shift (Mac) while dragging a corner handle. This scales the content inside the frame proportionally and keeps the frame's proportions. This prevents distortion of the image or text within the frame.

In summary, here's how to resize all content proportionally from the center:

Select the frame you want to resize.
Press and hold Ctrl + Shift + Alt (Windows) or Command + Shift + Option (Mac).
Click and drag a corner handle to resize.
Release the mouse button and then the keys.

These shortcuts allow you to resize the frame and its content proportionally from the center point, making adjustments easier and more precise.