Crop PDF Pages Online Free
Trim white borders or unwanted margins from every page of your PDF. Set individual margins per side in millimetres. Free, no signup, files never leave your browser.
🔒 Your file never leaves your browser. All processing is done locally.
How to Crop PDF Pages
- 1
Upload your PDF
Click the upload zone or drag and drop your PDF. Your file stays on your device and is never sent to a server.
- 2
Set crop margins
Enter how many millimetres to trim from each side — Top, Right, Bottom, Left. Values of 10–20 mm remove typical white borders.
- 3
Download the cropped PDF
Click "Crop PDF" and download the result. All pages are cropped to your specified margins.
Cropping a PDF is useful for removing unnecessary white borders from scanned documents, cutting header or footer bars that were part of a web page, or focusing on a specific region of a technical drawing. want2convert trims all margins in the browser without uploading your file anywhere.
How it works: The tool uses pdf-lib to set a crop box on each page. A PDF crop box defines which portion of the page is visible in PDF viewers — content outside the crop box is hidden but not deleted, which is standard PDF behaviour. The margins you enter (in mm) are converted to PDF points and applied uniformly to all pages.
Removing scan borders: Scanned documents often have irregular black or white borders. Try margins of 5–15 mm to remove them cleanly without clipping the actual content.
Note: Because cropping sets a visual boundary rather than deleting content, the file size does not decrease significantly after cropping.