ToolnozaThese operations solve different problems
Cropping controls the visible page rectangle. Flattening a PDF form makes interactive AcroForm fields part of the visible page appearance. They are not interchangeable and neither should be confused with secure redaction.
Choose based on your goal
For large white borders around a scan, crop the page. For a filled form whose answers should remain visible across PDF viewers, flatten the form fields. For hiding confidential words or account numbers, neither is sufficient; remove the content using a tested redaction workflow.
Worked decision example
Suppose a PDF contains a two-page application form, with large margins and fillable address fields. If you crop first, verify no answer falls outside the visible crop. Then flatten a copy if the recipient requests non-editable form fields. Preserve the original because the recipient may actually need the form to remain interactive.
What Toolnoza supports
The Crop PDF tool uses offsets and a width/height rectangle in millimetres and applies a common crop to each page. Its documentation warns that hidden material remains inside the file. Flatten PDF Form Fields supports AcroForm fields but not XFA and does not guarantee every annotation type.
Verification checklist
Open the exported PDF, check page dimensions, search the text if confidentiality matters, inspect entered values, and test a second PDF reader. Remember that visually correct output does not guarantee valid digital signatures or redaction.
Frequently asked questions
Does cropping remove text? Not necessarily; it often only changes what is visible.
Does flattening compress files? It is not principally a compression tool.
Can both be applied? Yes, but check content, page sizes and whether form interactivity must be preserved.