Trim margins from PDF pages — cut the white borders of scanned pages, oversized exports and off-center documents, by percentage, on every page at once.
Your PDF is processed locally — it never leaves your device.
PDF cropping sets the crop box — the rectangle readers and printers use as the visible page. The content stays in the file, intact and selectable; you are redefining the window, not cutting pixels. That is why cropping is reversible in editors and safe for text.
Use cases: scanned books with black or white edges, presentation exports with huge margins, forms printed off-center, and documents destined for small screens.
The crop is applied locally with pdf-lib in your browser. Your PDF is never uploaded to any server and never stored.
Select your PDF, set the margin percentages per side (5–10% usually cleans scanner borders), and download. Every page gets the same trim, keeping the document consistent.
The content becomes hidden, not deleted — the crop box defines what readers and printers show. Editors can restore it; for recipients, it is gone from view, which is the goal.
Cropping changes the visible window (content stays at its original size); resizing changes the page dimensions and scales content to fit. Crop to remove borders; resize to change paper size.
The tool applies one setting to all pages — the right default for scans and exports. For a single odd page, extract it (PDF Split), crop, and merge back.
Printers have a physical unprintable area (usually ~5mm). Keep at least 5% margins when the file is destined for paper, or use the print dialog's 'fit to page' option.
Effectively yes — trimming margins lets the same screen show the text area larger. For heavy reading, cropping A4 articles by 10–15% per side noticeably reduces zooming.