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Crop your PDF pages by adjusting a simple frame.
Zipero displays your PDF at full size and overlays a draggable, resizable frame. Adjust its edges to outline exactly the area you want to keep, then apply that crop to every page of the document in one click.
Handy for trimming oversized margins, hiding a header or footer banner, or recentering the useful content of a scanned PDF.
Your PDF is processed right in your browser. It is never sent over the internet or stored on our servers.
How to crop a PDF with Zipero
- 1Upload the PDF you want to crop: the first page appears at full size with a default crop frame.
- 2Move the frame and resize it freely from its 4 corners to outline the area to keep; flip through pages to check the result.
- 3Click Crop & download to apply this frame to every page and get your cropped PDF.
When is cropping a PDF useful?
- ▸Removing overly wide white margins before printing or sharing a document.
- ▸Hiding a header, footer, or ad banner that appears on every page of a scanned PDF.
- ▸Recentering the useful content of a page that was scanned crooked or off-center.
How Zipero's PDF cropping works
The frame you adjust on screen is converted into PDF coordinates (with the vertical axis flipped, since a PDF's origin is at the bottom-left).
pdf-lib then applies those coordinates to the CropBox of every page in the document, which tells PDF readers to display and print only that area.
The new PDF is generated entirely locally and then offered for download, without ever passing through a server.
Frequently asked questions about cropping a PDF
Is the content outside the frame removed from the file?
No. Zipero changes each page's CropBox, which only defines the area shown and printed by default. Content located outside the frame remains physically present in the PDF file and can be revealed by a tool that ignores or resets the CropBox. If you need to permanently remove sensitive information, use a dedicated redaction tool rather than cropping.
Can I apply a different frame to each page?
Not in the current version — the tool applies the same frame, at identical fractions, to every page of the document. Browse through the pages to check the frame suits all of them before clicking Crop & download.
Does cropping reduce the file size?
Not necessarily. Since the original page data isn't deleted, only the visible area changes, so the file size can stay close to the original.
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Epson Perfection V39 II
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Amazon affiliate link — supports Zipero for free. Go Premium to remove.