How to Crop PDF Pages Online Free Without Losing Quality
Trim margins, cut whitespace, and crop PDF pages precisely in your browser. 100% free, private local processing with zero server uploads.
Open Crop PDF — free, in your browser
Why crop PDF pages?
Scanned documents, ebooks, academic papers, and invoices frequently contain excess whitespace, scanning borders, or oversized margins that waste ink and look clumsy on mobile screens or e-readers. Trimming margins makes documents easier to read, standardizes page sizes, and reduces overall file size when printing or emailing.
Steps to crop PDF margins in your browser
Open free PDF cropper · Rotate sideways pages first
- Open the Crop PDF tool and drop your PDF file.
- Drag the bounding crop box over the page preview to define the desired margin boundaries.
- Apply the crop box to the current page, a custom page range, or all pages at once.
- Click Crop PDF to re-encode the document boundaries in seconds.
- Download your cleanly cropped PDF with zero watermarks.
Auto-trim whitespace vs. manual box cropping
Auto-trim scans the document coordinate space and detects empty margins automatically, removing perimeter blank space in a single click. For multi-column academic papers, legal documents, or presentation slides, dragging a custom crop box allows precise control over header, footer, and side gutters.
Edit original text in your PDF · Add uniform page numbers after cropping
Privacy advantage of browser-local cropping
Unlike cloud PDF tools that upload sensitive contracts or personal bank statements to remote servers, The PDF Gen crops PDF bounding boxes locally inside your browser tab using WebAssembly and PDF.js. Your document never touches our servers.