Is the cropped-away content removed permanently?

No — it's hidden outside the crop box, and the underlying data remains in the file. Software that ignores or resets crop boxes can reveal it. For genuinely removing sensitive content, use the Redact PDF tool, which eliminates the data rather than masking it.

How do I convert my measurements to points?

Multiply inches by 72, or centimeters by 28.35. Half an inch is 36 points; one centimeter is about 28. An A4 page is 595 × 842 points, US Letter 612 × 792 — useful for sanity-checking how much you're removing.

Can I crop different amounts on different pages?

One set of margins applies to all pages per run. For different treatment of different sections, split the document with Split PDF, crop each part separately, and merge the results back together.

Why does the page look the same size in some software?

Virtually all viewers and printers honor the crop box, but a few utilities work from the raw media box instead. If a downstream tool ignores your crop, that tool is the exception — the file itself is correct.

Crop PDF

Crop PDF pages by adjusting margins. Files are processed entirely in your browser.

Drop PDF files here or browse

Max 100MB per file

About Crop PDF

Cropping a PDF trims the visible area of each page — the standard fix for scans with excessive margins, pages with printer marks along the edges, or documents whose whitespace wastes half the screen on an e-reader. Convertora's crop tool takes a margin to remove from each side and applies it to every page, shrinking the visible page to just the content that matters.

Technically, the tool adjusts each page's crop box — the rectangle PDF viewers and printers use as the page boundary. The content outside it isn't deleted; it's hidden. That makes cropping non-destructive (the layout underneath is intact) but also means crop is a display operation, not a security one — a distinction that matters if you're tempted to crop away something confidential.

Margins are specified in points, the PDF's native unit: 72 points to the inch, roughly 28 points to the centimeter. The default of 50 points (about 1.8 cm) per side suits typical over-scanned documents, and the tool checks your numbers against the actual page size so you can't accidentally crop a page out of existence.

How to use it

1Upload your PDF (up to 100 MB).
2Set the amount to trim from each side — Top, Bottom, Left, and Right, in points. All four default to 50.
3Click Crop. The crop box of every page is adjusted by those margins; if the values would exceed a page's dimensions, the tool stops with an error instead of producing a broken file.
4Download the result, saved with a -cropped suffix.

Common use cases

Trimming scanner margins so the document fills the screen instead of floating in white space.
Removing crop marks and bleed from a print-production PDF to get a clean reading copy.
Tightening page margins before N-up printing, so each cell of the grid is content rather than whitespace.
Making a dense academic paper readable on a small e-reader screen by cutting the white border.

Frequently asked questions

Tips

Sneak up on the right values: start around 30–50 points, check the output, and adjust. The original is untouched, so iterating is free.
Cropping changes the visible page proportions. If the output must be a standard size afterwards, run it through the Resize PDF Pages tool.

100% private — runs in your browser

Convertora processes everything on your device using JavaScript and WebAssembly. Files never leave your browser, are never uploaded to a server, and are never seen by us or anyone else. The moment you close the tab, the data is gone — there is no temporary cloud copy, no log entry, no retained backup.

Because the work happens locally, processing speed depends on your device — but there are no rate limits, no daily caps, and no file size restrictions beyond what your browser can handle in memory. No signup, no account, no payment. The tool works the same in incognito mode, on a corporate network, or after the page has loaded once, even with the network disconnected.