Here is a guide to Batch Crop PDF pages & files using various free online services and free software on Windows 11/10 PC.

Learn how to remove or delete specific pages from a PDF document using a free online tool or software on Windows 11/10.

How to redact in macOS Preview Preview warns if you try to draw over text, since that doesn’t actually remove it from a PDF (top). Instead, use the Redact tool, which also explains itself.