Crop PDF Online — Trim Margins for Free
Cut white margins off every page with precise millimetre controls.
About this tool
To crop PDF margins is to trim the excess white space around your content — and this free tool does it with exact millimetre precision on every page at once. It's the quick fix for presentation slides exported with huge borders, scans with dark edges, and documents that waste paper when printed.
Set independent top, bottom, left, and right margins and the tool adjusts each page's crop box accordingly. Because cropping only changes the visible area (the underlying content stays in the file), it's completely non-destructive — you can always re-crop or revert later.
Cropped PDFs look sharper on screen, fit better on e-readers and phones, and print with less wasted space. Processing is fully local in your browser: no uploads, no accounts, no watermarks on the output.
How to use
- Upload your PDF.
- Enter the margins to trim in millimetres (top, bottom, left, right).
- Press “Crop PDF”.
- Download the trimmed file.
Frequently asked questions
Does cropping delete my content?
No. Cropping only hides the area outside your margins by adjusting the page's crop box — the content remains in the file.
Can I crop different pages by different amounts?
The same margins apply to all pages, which is ideal for uniform documents like slide decks.
What if my margins are too big?
The tool checks each page and warns you if the margins would leave nothing visible, so you can't accidentally blank a page.
Will cropping reduce file size?
Slightly, sometimes — but for real size reduction use the Compress PDF tool.
Is it free with no signup?
Yes — free, unlimited, no account needed.
Where is my file processed?
Entirely in your browser. Nothing is uploaded.