Crop PDF
Trim margins from every page of a PDF by a percentage on each side.
Trim oversized margins so your PDF reads better on any screen
Scanned documents, phone captures, and many academic PDFs come with huge white margins — great for paper printing, wasteful on a phone or e-ink reader. Cropping shrinks the visible area to just the content, which makes text larger when zoomed, cuts down printing costs, and improves the reading experience on Kindle, reMarkable, iPad, and other small-screen devices.
Great uses for cropping
- Shrinking academic PDFs for Kindle, Boox, or reMarkable e-readers
- Removing black scan borders from document photocopies
- Cleaning up phone-captured PDFs with wide unintended margins
- Preparing a PDF for a narrow-column print layout
- Focusing a scan on the receipt or slip while discarding background paper
Why percentage instead of pixels
PDFs often mix page sizes — A4 mixed with Letter, or landscape slides mixed with portrait notes. Percentage-based cropping scales with the page, so a 10% top crop trims proportionally no matter the original dimensions. One setting handles the whole document cleanly.
How to use this tool
- Upload the PDF.
- Adjust the top / right / bottom / left margin sliders.
- Click Crop & Download to save the trimmed PDF.
Frequently asked questions
Is the cropped content deleted?
The crop sets the visible area — hidden content still exists but isn't shown. Use Flatten PDF after cropping to permanently discard everything outside the crop box.
Can I crop by pixels instead of percent?
Percent adapts to any page size — better for mixed-size PDFs. If you need exact pixel control, use a desktop editor like Acrobat or PDF Expert.
Will cropping affect file size?
Minimally — since the underlying content is kept. Pair with Flatten PDF + Compress PDF for actual size reduction.
Does the same crop apply to every page?
Yes, the values apply uniformly across all pages. For page-by-page crops, split the PDF, crop each segment differently, and merge.
Is cropping reversible?
Yes, as long as you haven't flattened. Re-upload the cropped PDF and set all margins back to 0 to restore the original view.