How to Crop PDF Pages
Define margins visually or numerically. The default Preserve PDF Content mode updates the CropBox so PDF viewers show only the chosen page area while source text, vectors and images remain intact.
Define margins visually or numerically. The default Preserve PDF Content mode updates the CropBox so PDF viewers show only the chosen page area while source text, vectors and images remain intact. The interface is designed to keep the active PDF workflow near the top of the page, while this guide explains what the tool changes, what it preserves, and where a different PDF tool is the safer choice.
Crop PDF Margins
Numeric top, right, bottom and left margins can be entered in millimetres. They are converted to PDF points before the CropBox is updated.
Numeric top, right, bottom and left margins can be entered in millimetres. They are converted to PDF points before the CropBox is updated. The interface is designed to keep the active PDF workflow near the top of the page, while this guide explains what the tool changes, what it preserves, and where a different PDF tool is the safer choice.
Apply the Same Crop
For mixed-size documents you can apply the same absolute visual margins or the same relative crop percentages. This prevents a crop chosen on one page from accidentally removing too much of a differently sized page.
For mixed-size documents you can apply the same absolute visual margins or the same relative crop percentages. This prevents a crop chosen on one page from accidentally removing too much of a differently sized page. The interface is designed to keep the active PDF workflow near the top of the page, while this guide explains what the tool changes, what it preserves, and where a different PDF tool is the safer choice.
CropBox Explained
A PDF page has a MediaBox and may also have a CropBox. The CropBox controls the visible region. Changing it is normally non-destructive because content outside the visible region can still exist in the PDF file.
A PDF page has a MediaBox and may also have a CropBox. The CropBox controls the visible region. Changing it is normally non-destructive because content outside the visible region can still exist in the PDF file. The interface is designed to keep the active PDF workflow near the top of the page, while this guide explains what the tool changes, what it preserves, and where a different PDF tool is the safer choice.
Crop Is Not Redaction
Cropping must not be used to remove sensitive information. Hidden content can remain recoverable. Use a secure redaction workflow when information must actually be removed.
Cropping must not be used to remove sensitive information. Hidden content can remain recoverable. Use a secure redaction workflow when information must actually be removed. The interface is designed to keep the active PDF workflow near the top of the page, while this guide explains what the tool changes, what it preserves, and where a different PDF tool is the safer choice.
Rotated Pages
The visual crop rectangle is mapped back through the PDF.js page viewport so rotated pages use the correct PDF coordinates instead of simple screen-pixel assumptions.
The visual crop rectangle is mapped back through the PDF.js page viewport so rotated pages use the correct PDF coordinates instead of simple screen-pixel assumptions. The interface is designed to keep the active PDF workflow near the top of the page, while this guide explains what the tool changes, what it preserves, and where a different PDF tool is the safer choice.
Privacy
The crop rectangle and PDF bytes stay in the browser. No remote crop API is involved.
The crop rectangle and PDF bytes stay in the browser. No remote crop API is involved. The interface is designed to keep the active PDF workflow near the top of the page, while this guide explains what the tool changes, what it preserves, and where a different PDF tool is the safer choice.
Frequently Asked Questions
Can I crop margins?
Yes, visually or with numeric margins.
Can the same crop apply to all pages?
Yes.
Does cropping delete hidden content?
No. Standard CropBox cropping is not secure deletion.
Can mixed page sizes be cropped?
Yes, with same-margin or relative-crop behavior.
Is crop the same as redact?
No.
Are files uploaded?
No.
Related PDF Tools
Edit PDF · Rotate PDF · Add Page Numbers · Add Watermark · Crop PDF · PDF Forms