Free PDF Crop Tool: Remove Margins & Trim Pages Online

PDF Crop — Trim Margins, Remove Borders, and Resize Pages to Fit

PDF pages accumulate unnecessary margin space from multiple sources: scanners that capture the scanner lid edge around the document, print-to-PDF operations that include printer margin offsets, documents designed for letter-size paper converted for A4 display, and legal or ledger documents that need to be distributed on standard letter pages. Cropping adjusts the visible page area without altering the underlying content — text and images outside the crop boundary are hidden but not deleted, allowing the crop to be adjusted or removed later if needed.

Scanned document cleanup is the most common crop use case. A flatbed scanner captures a white border around the physical document, and often a gray or black border at the scanner bed edge. These borders add visual noise and increase file size by including blank areas in the image. Cropping to the actual document content removes the scanner artifacts and produces a clean, professional-looking page. Applying the same crop rectangle to all pages of a multi-page scanned document ensures consistent margins throughout without cropping each page individually.

Page resizing through cropping affects how a document fits into downstream workflows. A scanned A4 document served to a printer expecting letter-size pages prints with either cut-off content or large white bars depending on the printer driver's scaling behavior. Cropping the A4 content area and resizing the page to letter dimensions (by adjusting the media box, not the content box) produces a letter-size PDF where the content fills the page correctly without scaling artifacts. This page size normalization is common in document management systems that route documents to printers or archive systems with specific page size requirements.