Cropping a PDF removes unwanted margins, white space, scan borders, or blank areas from pages — making the document cleaner and easier to read on screens. Here is how to crop a PDF for free without installing any software.
Go to pdfeditor.onl/crop-pdf. No sign-up or download required. The tool works in any modern browser on desktop, tablet, or mobile.
Click the upload area or drag your PDF into the tool. The tool renders all pages so you can see the current margins before cropping.
Enter the percentage to remove from each edge: Top, Bottom, Left, and Right. You can apply the same crop to all pages at once (Uniform mode) or set different crops for individual pages (Per-Page mode).
Tip: For scanned documents with black scan borders, try removing 2–4% from each side. For PDFs with large white margins, 10–20% from each side often gives a clean result.
A live preview of the crop overlay appears on the page thumbnail. Adjust the margin percentages until the crop looks right. The preview updates in real time so you always know what you will get.
Click Apply Crop and then Download. The PDF is saved with the new page boundaries. The crop is permanent — it adjusts the PDF MediaBox so all viewers will show the cropped layout.
The tool adjusts the PDF MediaBox, which hides content outside the crop boundary in standard viewers. The underlying content is technically still in the file structure — to permanently remove it, flatten the PDF after cropping.
Yes. Switch to Per-Page mode and set a different crop for each page individually.
Yes. The tool handles all page orientations — portrait, landscape, and mixed-orientation documents.
Slightly, because the cropped regions are hidden. For significant size reduction, use the Compress PDF tool after cropping.