Crop PDF
Trim margins from pages.
Runs in your browser. Your file is never uploaded.
Crop PDF in short
Add a PDF, pick the pages to crop (all are selected to start with), type how many millimetres to trim from the top, right, bottom and left, and download. Cropping changes the visible area of the page, which PDF calls the crop box. It doesn't delete anything: the trimmed edges are still in the file and can be restored, so cropping must never be used to hide sensitive information.
How to use Crop PDF
- 1Add a PDF.
- 2Set how much to trim from each edge.
- 3Download the cropped file.
Good to know
- Cropping only changes what viewers display. The hidden content is still in the file and can be recovered, so cropping is not redaction.
- Page numbers mean physical positions in the file: page 1 is the first page, whatever number is printed on it.
- This tool runs in your browser. Very large files depend on your device's memory.
Trimming 10 mm from every edge of an A4 page
We cropped a 3-page A4 text document with the tool's default of 10 mm per edge.
| Before | After | |
|---|---|---|
| Visible page size | 595 × 842 pt (A4) | 539 × 785 pt |
| Full page size stored in the file | 595 × 842 pt | 595 × 842 pt, unchanged |
| Page content | Original | Byte-for-byte the same |
| File size | 7.0 KB | 7.2 KB |
Because the content is untouched, the file doesn't get smaller. To shrink it, use Compress PDF. Measured on 1 November 2026 by running this page's code on sample documents we generated ourselves.
Limits
- Without an account: files up to 25 MB and 150 pages. With a free account: 50 MB and 400 pages.
- The same margins apply to every selected page. Crop in several passes if different pages need different margins.
- A crop that would leave a page smaller than half an inch (36 points) in either direction is refused.
- Margins are measured from the page as you see it, so a rotated page is trimmed on the edges you expect.
What happens to your file
Crop PDF runs in this browser tab. Your PDF is read and rewritten on your own device and handed back as a download; it is never sent to ConvertFile. We record only that the tool was used (its name and whether it finished), never file names, sizes or contents. Closing the tab discards everything.
If something goes wrong
- I cropped out a name but it's still there
- That's how cropping works in every PDF tool: the trimmed area is hidden, not removed, and anyone with an editor can bring it back. Use Redact PDF, which deletes the text and images under the box you draw.
- The cropped file is no smaller
- Nothing was deleted, so the size stays about the same. Compress PDF reduces size by re-encoding images.
- The printout still has white edges
- Printers scale the cropped page to fit the paper. Turn off Fit to page or choose Actual size in the print dialog.
Guides
- How to reduce PDF file size
Make a PDF smaller for email or an upload form: compress the images, cut pages you don't need, or split it. Tested figures, the attachment limits of Gmail and Outlook, and what not to bother with.
Crop PDF: common questions
- Is Crop PDF free?
- Yes. Crop PDF is free and works without an account, for files up to 25 MB and 150 pages. A free account raises that to 50 MB and 400 pages.
- Are my files uploaded to a server?
- No. Crop PDF runs in your web browser, so the file is read on your own device and never sent to ConvertFile.
- Does cropping remove the content I cut off?
- No. Cropping changes what PDF viewers display, but the hidden content is still in the file and can be recovered. Don't use cropping to remove sensitive information.
- Does Crop PDF work on Mac, Windows, Android and iPhone?
- Yes. It runs in any modern web browser, with nothing to install. Very large files work best on a desktop or laptop, because in-browser tools use your device's memory.
Related tools
More in Optimise PDF- Rotate PDFTurn all pages or just the ones you pick.
- Compress PDFShrink file size by recompressing images and tidying the file structure.Server-processed
- Add watermarkPlace text or an image across your pages.
- Redact PDFBlack out names, numbers and other sensitive details so they're gone for good.
- Reorder pagesDrag page thumbnails into a new order.