Crop the Margins off a PDF
Trim white space from the edges of every page, setting each side independently. Handles rotated pages. Runs in your browser with nothing uploaded.
Runs entirely in your browser — nothing is uploaded
Cropping does not delete anything
This is the single most important thing to know about cropping a PDF, and it is true of every tool that does it, not only this one. A crop sets a crop box — an instruction telling readers which part of the page to display. The content outside it stays in the file, and it comes straight back the moment somebody widens the box again.
So crop to tidy margins, to fit a scan on a small screen, to tighten a document before printing. Never crop to hide something. Anything you crop away can be recovered by anyone with a PDF editor, and published documents have leaked exactly this way.
Removing content properly means redaction — deleting the underlying objects rather than covering them — and no free browser tool does that dependably. If the material is genuinely sensitive, that is the job you are looking for, and it is a different one.
Why percentages rather than millimetres
The trim is set as a percentage of each side, so the same setting works on a document whose pages are not all the same size — which scans very often are not. A fixed measurement that suits an A4 page eats half of a receipt.
The preview shows the first page with the kept area outlined and the rest dimmed, because judging a margin from four numbers is guesswork. The same trim is then applied to every page.
Sideways pages behave
The margins mean what you see. Trimming the top trims the top of the page as it appears, which on a rotated page is not the top of the stored one — a landscape table dropped into a portrait report is stored one way and displayed another.
Each side is mapped through the page’s own rotation before the box is set, so every page crops the way the preview suggests. The preview itself is rendered in display orientation, which is why what you see is what you get.
It will not make the file smaller
Because nothing is removed, the file keeps essentially all of its weight. Cropping changes how pages present, not what they contain. If a smaller file is what you actually want, run the result through Compress PDF, or convert the pages to images with PDF to JPG, which does discard what falls outside.
Nothing is uploaded
The document is opened, previewed and cropped inside this tab, using the same engine your browser already uses to display PDFs. Neither the file nor the page images go anywhere, and your original is untouched — the tool writes a new document rather than modifying the one on your disk.
Frequently asked questions
Is the cropped-away part actually gone?
No, and this is the thing to understand about every PDF cropper, not just this one. Cropping sets a crop box, which tells a reader which part of the page to display. The content outside it is still in the file and reappears the moment someone widens the box again. It is a display instruction, not a deletion.
So I cannot use this to hide something?
Correct, and it would be dangerous to think otherwise. Anything you crop out can be recovered by anyone with a PDF editor — this has caused real leaks with published documents. To remove content properly you have to redact it, which means deleting the underlying objects, and no free browser tool does that reliably. Crop for margins, never for secrets.
Will the file get smaller?
Barely, for the same reason. The content is retained, so the file keeps almost all its weight. What does change is how the pages present — useful for reading a scan with huge borders on a small screen, or for tightening a document before printing. Run it through Compress PDF if size is the goal.
What about pages that are sideways?
The margins are given the way you see the page, so trimming the top means the top as displayed. On a rotated page that is not the top of the stored page, so each side is mapped through the page’s own rotation before the box is set. A landscape page inside a portrait report crops the way you would expect it to.
Can I crop each page differently?
Not here. The same margins apply to every page, which is right for the common case — a scan with consistent borders, or a document with the same layout throughout. Per-page cropping needs to see each page as you work, and that is a full editor rather than a single-purpose tool.