PDF Crop

Common use cases

• Trim scanner margins — scanned documents often have black or white edges
• Resize for printing — fit content into a smaller print page
• Reading on e-readers — crop unused margins to maximise text size on a Kindle / reMarkable
• Remove watermarks at the page edge — when the watermark is in the margin area only

How it works

Each page's MediaBox (the box that defines the visible page area) is shrunk by your trim values. The content outside the new box is still present in the file but no longer rendered. This is non-destructive — opening the file in Acrobat shows only the cropped region, but the original area is still accessible by editing MediaBox back.

Privacy

The PDF is parsed and rewritten in your browser via pdf-lib. Nothing is uploaded.