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Crop PDF

Book scans arrive with a thick gray border on every side, and on a six inch e-reader that border shrinks the actual text to squint size. This crop pdf tool cuts the border away. Upload the file, type a margin in points into the Margin to trim field, 72 points equals one inch, and a dashed rectangle redraws on every thumbnail to show exactly where the new page edge falls. One value trims all four sides of every page, which is just what's needed to trim pdf margins off a uniform scan. Click Crop & download and the result saves with -cropped in the filename, processed entirely on your own machine.

Always freeNo sign upRuns in your browser

How to use

01

Upload the scanned PDF

Drop your file in the upload zone. Every page appears in the preview grid, so you can judge how much dead border the scanner wrapped around the content.

02

Dial in the margin

Enter a value from 0 to 200 in the Margin to trim (points) field. The dashed rectangle redraws live on each thumbnail as you adjust the number.

03

Crop and download

Press Crop & download. The tool sets a matching crop box on every page and hands back yourfile-cropped.pdf, ready to sideload onto your reading device.

Why Crop PDF

Common questions

How many points equal the margin I want to crop?
Multiply inches by 72: a half inch border is 36 points, a full inch is 72. Working in centimeters, multiply by about 28.35. Most scanner borders fall somewhere between 20 and 40 points.
Is crop pdf free to use for large scanned files?
Yes, you can crop pdf pages online here at no cost. Yes, free with no account, no watermark, and a 100 MB ceiling per file that comfortably covers most scanned books. Since your machine does the work, a big file just takes a moment longer to render its thumbnails.
Does cropping remove the content outside the box?
No, it hides it. The tool sets each page's crop box, which tells viewers what region to display, while everything outside remains stored in the file. Anyone with an editor can reset the box and see the full page, so never use cropping to conceal sensitive information.
Why is my file the same size after a crop?
Because no data was deleted, only the visible region changed. The full scanned image of each page is still embedded beneath the crop box. If size is the problem, run the result through the Compress PDF tool afterward.
Can every page get a different crop margin?
No, one margin applies to all four sides of every page in the document. That suits uniform scans well but not layouts where content drifts around. For those, pick a margin conservative enough for the worst page.
What unit does the crop margin field use?
PDF points, the format's native unit, where 72 points make an inch. The field accepts whole numbers from 0 to 200. Typing 0.5 hoping for half an inch won't work; enter 36 instead.
Will a cropped PDF display correctly on an e-reader?
Almost always, since Kindle, Kobo, and the major reading apps respect the crop box when fitting a page to the screen. The payoff is real: less border means the device scales the text block larger. A quick check on your own device before cropping a 400 page book is still wise.
How does this pdf crop tool preview the trim before saving?
Load the file and this pdf crop tool shows every page in a grid with a dashed rectangle overlay. Type a margin in points and the rectangle redraws live, so you can judge the trim before you commit. That preview is what makes it quick to crop pdf pages without guessing at numbers.
What kind of pdf to crop works best with this tool?
Uniform scans, where every page carries a similar border. Pick a pdf to crop, enter one margin, and crop the pdf in a single pass. Files where the content drifts around the page are trickier, since one margin can't chase a moving text block.
Does this online pdf crop tool keep my pdf crop file private?
Yes. The online pdf crop tool renders the thumbnails and writes the new crop box in your browser, so the pdf crop file never uploads. A confidential scan stays on your machine from the moment you open it to the moment you download.
Is pdf file crop online free, or is there a paid tier waiting?
It's free, with nothing gated behind a payment. Some crop sites lock the download or stamp the output until you subscribe. Here pdf file crop online free means the finished, unstamped file downloads on the first try.
Where is the crop option in a pdf editor crop menu?
There's no menu to hunt through. Instead of a pdf editor crop feature tucked inside a toolbar, this page is only the crop function, so the margin field and the live preview are the first things in front of you.
Does this tool do pdf crop and resize in one step?
It crops, but it doesn't resize the page to new dimensions. The pdf crop and resize you might expect from a design app isn't here; this sets a crop box that hides the margins instead. The visible area shrinks, though the page size stored on disk stays the same.
Can I crop pdf image online, meaning a single photo inside a page?
Not one embedded image on its own. When you crop pdf image online here, the crop box trims the whole page, not a picture within it. To crop a photo by itself, pull it out first with PDF to JPG, crop it in the Image Cropper, and drop it back.
Is this pdf page cropping software online, or something to install?
It runs online, with nothing to install. Despite the phrase pdf page cropping software online, there's no installer; it's a web page that works as a trim pdf margins tool, setting a crop box on every page right in the browser.

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