Auto-detect and remove white borders from every page. Great for scanned PDFs.
Drop your PDF here
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Choose a fileWorks best on scanned documents
FusionPDF's margin removal tool automatically detects and crops the white space around the content of each PDF page. Instead of manually adjusting each margin, the tool analyzes the actual content area and trims the page to fit — saving time when cleaning up scanned documents or exported reports.
Drop your PDF into the upload area. The tool scans each page to detect the content boundaries and calculates the optimal crop for each one. You can adjust the padding around the detected content before applying. Click Remove Margins and download your cleaned PDF with tighter, more consistent margins throughout.
Auto margin removal is ideal for scanned books or articles with inconsistent borders, exported reports with large padding added by the source application, or academic papers where narrow printable areas need to be maximized. It also improves readability when displaying PDFs on smaller screens or e-readers.
The entire operation runs locally in your browser — your PDF is never uploaded to a server. FusionPDF analyzes and crops each page using PDF-lib and canvas-based content detection. The tool is free, requires no account, and processes multi-page documents just as easily as single-page ones.