Two quick tips for duplicating guides and changing guides between horizontal and vertical in InDesign.
1. Hold the Option/Alt key and drag an existing guide to make a copy of it.
2. When you’re dragging a new guide from a ruler, you can change it from horizontal to vertical (or vice versa) by holding Option/Alt.
This article was last modified on January 12, 2026
This article was first published on May 28, 2019
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