Crop PDF

Trim margins, headers, and footers from every page of a PDF. Drag sliders, preview the crop, download. Stays in your browser.

Runs in your browser — nothing uploaded

Trim margins, headers, footers, or whitespace from every page of a PDF. Drag the sliders to dial in the crop, preview the kept area, then download a tightened PDF.

Private by design — your data never leaves your device

How to use it

No account, no upload — it all happens on your device.

1
Drop a PDF onto the box, or click to choose one.
2
Drag the top, right, bottom, and left sliders to set how much to trim from each edge.
3
Click Crop & download. The same crop is applied to every page of the file.

Common reasons to crop

Why people reach for this tool.

  • Strip header and footer bars. Scanned reports often have repeating headers; cropping shaves them across every page in one go.
  • Tighten margins for reading. A PDF generated from a paper-sized template wastes screen real estate on phones. A 5–10% crop on each side significantly improves readability.
  • Remove watermarks or stamps at the edge. If the watermark sits in a fixed corner, crop it out instead of trying to remove it from the rendered content.

How PDF crop really works

PDF defines a few box rectangles per page. The MediaBox is the full physical page; the CropBox is what readers display by default. Setting CropBox does not delete the content outside it — viewers just don't show it.

That's convenient for non-destructive crops (you can always widen the box later) but it means the original content is technically still in the file. If you need a destructive crop where the hidden region is truly gone, export your cropped pages to images with PDF to JPG and rebuild a new PDF from those images.

Frequently asked

Does crop actually remove content from the file?
No — crop sets the PDF's CropBox, which tells viewers what region of each page to display. The trimmed content is hidden but technically still in the file. For a destructive crop, export to images first and rebuild.
Can I crop different pages differently?
Not in this version. The same margins apply to every page in the file. If you need per-page crops, split the PDF into single pages, crop them separately, and merge back.
Is anything uploaded?
No. The file is parsed and rewritten by pdf-lib entirely in your browser. Nothing leaves your device.

Related tools

PDF MergeMerge multiple PDF files into one in your browser. Drag in PDFs, reorder them, and download the combined file. No uploads, ever.Split PDFSplit a PDF into one or many files by page range. Runs entirely in your browser — your PDF is never uploaded.Rotate PDFRotate PDF pages 90, 180, or 270 degrees and save the result. Works on every page or selected pages, all in your browser.