Crop PDF
Drag a rectangle over what to keep — trim margins and scanner borders.
About this tool
Drag a box over the part of the page worth keeping; apply it to every page or just the current one. The same rectangle (as a fraction of the page) crops the whole document — exactly what scanner-border trimming needs. Non-destructive, on-device, free forever.
How PDF cropping actually works
Unlike cropping a photo, cropping a PDF doesn't delete anything: the file format has a “crop box” that tells viewers which region to display, and this tool sets it. Your text stays real, selectable text at full quality — and the trimmed content is technically still in the file, just hidden. That's the right behaviour for margins and scan borders; it also means cropping is NOT redaction — hiding a paragraph with a crop does not remove it, and anyone who resets the crop box sees it again. For an e-reader, shaving generous margins makes body text meaningfully larger on screen — often the difference between readable and squinting. Rotating sideways pages first is the rotate tool; scaling pages to a different paper size is fit to page.
Frequently asked questions
Does cropping reduce quality?
No — it sets the PDF's crop box, a display instruction. Text stays selectable vector text; nothing is re-rendered.
Can I crop just one page?
Yes — “this page only” applies your rectangle to the current page and leaves the rest untouched. “All pages” uses the same proportional rectangle throughout.
Is cropping safe for hiding sensitive content?
No — cropped content is hidden, not removed, and can be un-hidden by resetting the crop box. Cropping is for margins, not secrets.
Why crop a PDF for an e-reader?
Print margins waste a small screen. Cropping them lets the reader zoom body text larger — often 20–30% bigger for the same screen.