Auto-Crop PDF Margins
Automatically trim white margins from every PDF page. Free and private in your browser, no upload.
Trim empty margins without drawing boxes
Scans and exports often leave huge white borders. Auto-crop finds the content box on each page and trims to it — locally, with no manual marquee.
What you can do with it
- Tighten scanned pages
- Remove scanner bed margins before merging or OCR.
- Maximize on-screen reading
- Crop slides or handouts that waste space on whitespace.
How to auto-crop a PDF
- Open your PDF — it loads locally with no upload.
- Click Auto-crop & download.
- Review the trimmed pages in your PDF reader.
Content-aware margins
Detection looks for non-white pixels, so light gray backgrounds may remain. For stubborn gray beds, run Scan cleanup first, then auto-crop.
Manual crop still available
When only one region matters, the Crop editor gives precise control. Auto-crop is for bulk margin trim across whole documents.
Related reading and tools
- Free PDF editor — crop — Manual region crop and rearrange.
- Clean up scanned PDF — Whiten gray backgrounds before cropping.