Crop PDF Online — Free, Visual Crop Tool, No Sign-Up
Upload your PDF and draw a selection directly on the page preview. The tool crops every page to exactly the area you chose. No guesswork, no margins to calculate.
PdfDocShift › Crop PDF
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How to Crop a PDF — 3 simple steps
PdfDocShift renders your PDF's first page directly in the browser using PDF.js. Simply drag a rectangle over the area you want to keep — no margins, no maths. The exact crop box is sent to the server and applied to every page of your document using pdf-lib.
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No sign-up required. Files are encrypted in transit and auto-deleted after 2 hours.
When Do You Actually Need to Crop a PDF?
Cropping is more useful than most people realise. The most common reason is removing unwanted whitespace or margins — scanned documents often have thick borders that waste screen space and print area. Another frequent use case is stripping headers and footers from reports or academic papers before embedding them in presentations. Cropping is also handy when a PDF was exported with visible crop marks or bleed areas intended only for print production, and you want a clean digital version. Finally, if you have a two-page spread scanned as one wide image, cropping lets you isolate one half at a time.
Does Cropping a PDF Reduce the File Size?
Not necessarily — and this surprises many people. PDF cropping works by setting a CropBox, which tells viewers what portion of each page to display. The original page content outside the crop area is still stored in the file; it is just hidden. This means cropping does not delete image data or embedded assets, so the file size often stays similar. If you need a genuinely smaller file, run the cropped PDF through the Compress PDF tool afterwards. The combination of crop (to remove visual clutter) followed by compress (to reduce byte size) gives you the leanest possible result.
How Is the Crop Area Applied Across All Pages?
PdfDocShift lets you draw a crop rectangle on the first page preview, then applies the same crop box to every page in the document. This works well for consistently formatted documents like reports, books, or scanned forms where every page has the same layout. The crop coordinates are expressed as a percentage of the original page dimensions, so the proportional crop is preserved correctly whether your pages are A4, Letter, or a custom size. If your document has mixed page sizes or different content positions per page, it is worth checking a few pages after downloading to confirm the result meets your expectations.
Crop PDF questions
Everything you need to know about visually cropping PDF pages online.
PDF cropping sets a crop box that hides the areas outside the selected region. The underlying content outside the crop area is masked, not deleted. A PDF reader that ignores crop boxes could still display the full page. To permanently remove content, the PDF would need to be re-rendered.
The selection is drawn on page 1 and the same crop box (in PDF points) is applied to every page in the document. This works best for consistently-sized pages such as A4 or Letter documents. For mixed-size documents, the crop is applied as absolute coordinates which may not align perfectly on differently-sized pages.
No. The preview is rendered entirely in your browser using PDF.js — your file is not sent to our servers until you click the Crop PDF button. This means your document stays private until you explicitly choose to process it.
Yes. All files are transferred over 256-bit SSL and stored in encrypted cloud storage tied to your anonymous session. No one else can access your files, and they are permanently deleted after 2 hours. We never read or share your documents.