About

Crop PDF Pages

Crop the margins of every page in a PDF. Set top, left, right, and bottom in points (1pt = 1/72 inch). Runs in your browser — no upload.

Drop a PDF here or
  1. Drop a PDF or click "browse for one".
  2. Set the four crop margins in points. 72 points = 1 inch.
  3. Click "Apply & Download" to get the cropped PDF.
  4. Crop is uniform across every page. The original PDF is unchanged.
What does it do?

Reduces the visible region of every page in the PDF by trimming margins. The MediaBox and CropBox are both rewritten to the smaller rectangle, which is what every reader uses to display the page. Content under the crop is preserved in the file but not shown — the same way most desktop PDF tools handle crop.

Common gotchas

Cropping is straightforward but a few patterns trip up first-timers.

  • Cropping more than the page is wide. Setting left + right ≥ page width (or top + bottom ≥ page height) produces a zero-or-negative crop region. The tool refuses with an error. Use the page-info line for the page dimensions before deciding margins.
  • Mixed page sizes. PDFs with mixed page sizes get the same crop applied uniformly — pages smaller than the crop margin will be over-cropped. Split such PDFs first via /pdf-split and crop each section separately.
  • Content "missing" in the cropped output. Content under the crop is preserved in the file but hidden. Some PDF readers expose a "show all content" mode that ignores the CropBox; that content reappears there. To remove content permanently, you would need a re-render via /pdf-to-images + /images-to-pdf.
  • Crop in inches or millimeters? Inputs are in PDF points. Convert: 1 inch = 72 points, 1 cm ≈ 28.35 points, 1 mm ≈ 2.835 points. So a 1-inch margin is 72 points; a 5-mm margin is about 14 points.
  • Encrypted PDFs. Password-protected PDFs cannot be cropped without unlocking first. Use /pdf-unlock if you have the owner password.
  • Rotation interaction. If a page has a rotation set, top/left/right/bottom refer to the underlying (un-rotated) coordinates. For pages rotated 90° or 270°, swap top↔left and bottom↔right in your input to get the visual crop you expect.
Frequently asked questions

Can I crop different pages by different amounts?

Not in v1 — the same margins apply to every page. For per-page crop, split via /pdf-split, crop each section, and merge via /pdf-merge.

Will the cropped content actually be removed?

No — the underlying content stream is preserved; only the visible region (MediaBox + CropBox) is shrunk. To physically delete the cropped pixels, render through /pdf-to-images at the crop size, then build a new PDF via /images-to-pdf.

How do I know what page size my PDF is?

After dropping a PDF, the page-info line shows the first-page width × height in points. Common sizes: A4 = 595×842, US Letter = 612×792, US Legal = 612×1008.

Is my PDF uploaded?

No. Everything runs in your browser — your PDF is parsed and re-serialized by JavaScript on this page and never sent to any server.

Does crop work on scanned PDFs?

Yes — crop is a metadata-only change to the page boxes; it does not depend on whether the page content is text or a scanned image. The visible result is the same regardless of how the page is built.

Why are my crop values not honored exactly?

PDF crop sub-units are smaller than 1 point in some readers — rounding to integer points can produce a 1-pixel difference at high zoom. For most use cases this is invisible.