Quick answer: to crop margins from a PDF for free, open our Crop PDF tool, set how much to trim from each side as a percentage, and click Crop. In-browser, no upload, no quality loss.
How to Remove Scan Borders and White Margins
- Open the Crop PDF tool.
- Choose your PDF.
- Set the top, bottom, left and right margin percentages — start small (5-8%) and increase if needed.
- Click Crop PDF — every page is trimmed the same amount and the file downloads.
Why Percentage-Based Cropping
Fixed-size cropping (like "trim 20 points") behaves inconsistently across A4, Letter, and custom page sizes. Percentage-based cropping scales correctly no matter the original dimensions, so the same settings work reliably across a whole batch of documents.
Cropping Questions
Will cropping delete my content?
Crop only changes the visible page boundary; start with small percentages and preview before trimming aggressively near text or images.
Does cropping reduce file size?
Not significantly — the underlying content resolution is unchanged.
Is my document uploaded?
No, cropping happens in your browser using the PDF’s crop box property.
✨ Try it now — free & private
Trim excess margins from every page — remove scan borders, white space, or unwanted edges by setting a percentage to cut from each side. Runs fully in your browser.
✂️ Open Crop PDF →