Crop PDF
Crop the margins of every page (top, right, bottom, left) by percentage.
- Instant
- Free
- Private (processed locally)
- No sign-up
Trim the margins of a PDF
Open a PDF, set the margins to crop on the top, right, bottom and left (in %), follow the preview, then download. Great to remove white edges or reframe a scan — without uploading the file.
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Open the PDF
Drag and drop the file.
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Set the margins
Top/right/bottom/left sliders.
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Download
The cropped PDF.
Use cases
- Remove white margins before printing
- Reframe a scanned document
- Zoom into the useful area of a slide
- Make all pages share the same framing
Example: trim 10% on each side
| Item | Value |
|---|---|
| Source page | 400 × 500 pt |
| Margins | 10% all around |
| Kept area | 320 × 400 pt |
| Offset | x 40, y 50 |
Cropping changes the visible area (CropBox) without recompression. 100% local processing, file never uploaded.
Frequently asked questions
Is the cropped content deleted?
Cropping adjusts the crop area (CropBox): the part outside the frame is no longer shown or printed. The content is not recompressed, just reframed.
Does it apply to every page?
Yes, the same margin percentages are applied to each page of the document.
Is my file uploaded?
No. Cropping happens in your browser via pdf-lib. The PDF never leaves your device.
Why set it in percent?
So the same setting works regardless of page size (A4, Letter…). 10% trims 10% of each page’s width or height on that side.