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Crop PDF - Trim Margins in Your Browser

Trim the margins on a PDF, by exact points or by percent, page by page.

Add a PDF

Crop

Add a PDF to see every page as a thumbnail. The crop is applied in this tab — nothing is uploaded.

About Crop PDF

This tool crops a PDF by resetting each page's crop box with pdf-lib, on your own device. Type the top, right, bottom and left margins in points or as a percentage of the page, or pick the Narrow, Wide or Square preset, then choose which pages to crop with the page grid or the range box. A rotated page is measured the way a reader sees it, so the margin you call "top" trims the physical top of the page whatever the page's own rotation is set to. Cropping changes what the crop box shows; it does not redraw or delete the content outside it, which stays in the file and can still be recovered by anyone who opens it with the right tool.

Features

100% Private

All processing happens in your browser. Your files are never uploaded to any server.

Instant

The crop is applied straight to the page boxes, so even a several hundred page PDF is done in a moment.

Rotation Aware

A sideways page is still trimmed from its real top, right, bottom and left, the way the reader sees it.

100% Free

No signup, no watermarks, no limits. Completely free to use forever.

How to use Crop PDF

  1. 1

    Add your PDF

    Drop the PDF into the upload area, click to browse, or paste it with Ctrl+V. Every page appears as a thumbnail.

  2. 2

    Choose the pages

    Every page is cropped by default. Type a range like 3- or click the thumbnails if only part of the document should be cropped.

  3. 3

    Set the margins

    Pick Narrow, Wide or Square, or type your own top, right, bottom and left margins in points or percent.

  4. 4

    Run it

    Click Crop PDF. Progress is shown page by page and can be cancelled at any point.

  5. 5

    Download the result

    Rename the output if you like, then save the cropped PDF to your device or hand it straight to another PDF tool.

Use cases

  • Trimming wide scan borders from a document before archiving it
  • Cropping a page to a centred square for a cover or thumbnail
  • Tightening a PDF's margins before printing or sharing it
  • Cutting blank space from slides exported to PDF

Privacy

The crop is applied in your browser using JavaScript. Your PDF is never uploaded to a server, nothing is logged, and closing the tab discards it. Cropping hides content rather than deleting it, so it is not a substitute for redaction.

Frequently asked questions

Yes, this Crop PDF tool is 100% free with no hidden charges, no signup required, and no usage limits.
Absolutely. The crop happens directly in your browser using JavaScript. Your file is never uploaded to any server, so nothing leaves your device.
No. Cropping only changes each page's crop box, which is the visible window a reader sees. The content outside that box is still stored in the file and can be recovered, so cropping is not a way to redact or remove information - use a redaction tool for that.
Yes. Type a range like 3- or 2-10 in the pages box, or click the thumbnails to build it. Only those pages get cropped.
Narrow trims 18 points and Wide trims 36 points from every edge. Square crops each selected page to the largest square centred on that page, so the exact margins differ by page size.
They are cropped correctly. The tool reads each page's own rotation and trims from the physical top, right, bottom and left as a reader would see them, not from the page's unrotated edges.
Points give an exact trim in the same units as the page. Percent scales with each page's own size, which is useful when the pages in your PDF are not all the same size.
No. A password protected PDF has to be unlocked first. The tool says so plainly when you drop one in, rather than failing silently.

Related tools

Add Watermark

Free online tool to add a text watermark to a PDF. Choose one of nine positions, a straight or diagonal angle, the font size, opacity and colour, then watermark every page or only the pages you pick. No signup required, 100% private.

Add Page Numbers

Free online tool to add page numbers to a PDF. Choose one of six positions, four number formats, the number to start from, the font size and the margin, then number every page or only the pages you pick. No signup required, 100% private.

Remove PDF Pages

Free online tool to remove pages from a PDF. Pick the pages to delete in the thumbnail grid or type a range, see how many pages will be left, and download the trimmed document. No signup required, 100% private.

Developed by MadMVP

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