About this tool
Every PDF page carries a CropBox alongside its MediaBox — the MediaBox is the full physical sheet, while the CropBox is the region a viewer or printer actually shows. Cropping a PDF means shrinking that CropBox, not touching a single pixel of the underlying content, so the operation is lossless and instant: the text and images are still there, just outside the visible window on the edges you trim. Drop in a PDF, enter how many points to shave off the top, bottom, left and right, choose whether to crop every page or only a specific list like "1,3,5-7", and download the result — all processed locally in your browser.
Because cropping only moves the CropBox's boundaries and never rewrites content, it is easy to reason about and easy to get wrong in one specific way: entering crop amounts larger than the page itself. Cropping 500pt off both the top and bottom of a standard 792pt-tall page would leave less than nothing, so this tool checks every targeted page's current size before saving and refuses with a clear message naming the page and its dimensions rather than silently producing a corrupt, zero-or-negative-size page.
Frequently asked questions
Does cropping delete the hidden content permanently?
No — cropping only changes the visible/printable area (the PDF's "crop box"). The full original page content stays in the file; a viewer or another tool could technically expand the crop box back out to reveal it. Don't rely on cropping to hide sensitive information — use redaction for that.
What units are the crop amounts in?
Points (pt), the native PDF measurement unit, where 72pt = 1 inch = 2.54cm. So to crop away roughly half an inch, enter 36; for 1cm, enter about 28.3.