You have a PDF with wide white margins that waste space when printing. You need to focus on a specific chart in the middle of a page, removing everything around it. You want to prepare presentation slides by cutting PDF pages to exact dimensions. Simply printing and cutting physically is wasteful and unprofessional. Crop PDF tools solve this by adjusting the visible page area, letting you remove unwanted margins, focus on specific content, and resize pages for perfect presentation. This guide explains everything you need to know about cropping PDF pages in clear, practical terms. You'll learn why cropping doesn't actually delete content (a major source of confusion), how quality can be preserved or lost depending on your method, the difference between cropping and permanent trimming, security considerations when using online tools, and realistic expectations about what cropping can and cannot do. What is Crop PDF? Crop PDF is the process of adjusting the visible area of PDF pag...