Crop PDF Pages Online Free
Trim the margins of every PDF page by entering top, right, bottom, and left amounts. Private browser-based PDF cropping tool with no registration.
Step 1: Select Files
Drag & drop files here, or click to select
Support for PDF files up to 50MB
How to crop PDF pages in 4 steps
FreePDFLab runs entirely in your browser, so the steps below happen on your device without anything being uploaded to a server.
Upload your PDF
Drop the file onto the upload area or click to browse. The cropping happens locally so the document never leaves your device.
Enter the margins to trim
Specify how many points to remove from the top, right, bottom, and left of every page. One point equals 1/72 inch — typical printer margins are 36–72 points.
Apply the crop
Click "Process". FreePDFLab updates the page boundaries on every page using pdf-lib. Nothing is re-rendered — only the visible area changes.
Preview and download
Preview the cropped pages inline to make sure no content was cut off, then download the trimmed PDF.
Why crop PDF pages with FreePDFLab
Remove scanner borders
PDFs scanned at a desk often pick up dark borders or page edges. A 30–60 point crop on each side usually cleans them up without losing content.
Strip page numbers or footers
A small bottom crop removes auto-printed page numbers, footers, or barcodes from the bottom of every page in one pass.
Quick A4 retrim
Tighten the print area for booklets, certificates, or framed documents. The output keeps the original DPI because cropping does not re-render the page.
Browser-private
Cropping happens locally. The PDF never leaves your device, so even confidential scans are safe to retrim with FreePDFLab.
Frequently asked questions
What unit is the margin number in?
Points (pt). One point equals 1/72 inch. A typical US Letter page is 612 × 792 points. To convert from mm, multiply by 2.83 (e.g., 10 mm ≈ 28 pt).
Will cropping reduce the image quality of my PDF?
No. The crop adjusts the page boundary metadata, not the underlying content. Images, text, and embedded fonts retain their original resolution.
Can I crop each page differently?
Not yet. The current tool applies the same margins to every page. Per-page cropping is on the roadmap. For now, you can split, crop each section separately, then merge.
Is the cropped content really gone?
No. The original content is still inside the PDF — only the visible area changed. PDF readers honour the new crop box, but a determined user could expand the boundary back. If you need irreversible cropping, flatten the PDF after.
How do I know how many points to crop?
Start with 36 (half an inch) on each side and check the preview. Smaller numbers do subtle clean-up; larger numbers (72–108) trim aggressive margins from scans or printed-from-Word PDFs.
Is my PDF uploaded when I crop it?
No. Everything happens in your browser. The PDF stays on your device and the cropped output is generated locally.