How to crop a PDF — trim margins and reframe pages with the PDF Pro crop tool.
This guide is for anyone who needs a PDF to lose its dead space — a scan with thick white borders, a slide deck sitting on an oversized canvas, or a report where one chart deserves the whole page. Cropping reframes the page without rewriting a single glyph; here is how to draw the box and run it locally in two minutes.
What you'll need
- A modern browser (Chrome, Edge, Firefox, or Safari from the last two years)
- The PDF you want to crop, on your device
- An idea of the area to keep — trimmed margins, or a single region like a chart
- About two minutes — most of which is spent dragging the crop box into place
The five steps
Open the crop tool
Head to the PDF Pro crop tool. The page loads with the cropping engine bundled in — it runs entirely in your browser. There is no signup, no email-confirm wall, no "free trial" countdown, and no upload endpoint for your file to travel to.
Open your PDF and see the page preview
Drag the file onto the drop zone or click to browse. The tool parses it locally and renders page one at full fidelity — not a generic placeholder. You are looking at the actual content, margins, and proportions of your document, which is exactly what you want when deciding where the crop box belongs.
Drag the crop box over the area to keep
An interactive crop box sits over the preview. Drag the rectangle to move it, and pull any corner to resize. The page dims everywhere outside the selection, so the bright area is precisely what survives the crop. To trim margins, drag the corners inward until the white border disappears; to reframe, draw the box around a single chart, table, or column.
Choose all pages or selected pages
By default one crop box applies to every page in the document — the right choice when each page shares the same layout. When a scan has a few odd-sized pages, or only part of the file needs trimming, open the page selector and tick just the pages you want cropped. The rest are left untouched.
Download the cropped PDF
Click Apply Crop. The tool adjusts each page's crop box — it does not rasterize the document — and hands a re-boxed PDF to your browser's downloads folder. Because cropping changes the visible page box rather than re-rendering pages to images, text stays selectable and graphics stay sharp. The output is clean: no watermark, no "Cropped with…" footer, no appended branding sheet.
Apply Crop & downloadCommon mistakes & gotchas
- Cropping by page one alone when pages vary. The preview shows page one. If later pages have content sitting wider than page one, an "all pages" crop tuned tight to page one will clip them. Leave a margin, or crop varied pages with the page selector.
- Expecting a cropped file to be much smaller. Cropping changes the visible page box, not the underlying content — file size barely moves. To shrink a PDF, use the compress tool; cropping and compression are different operations.
- Cropping flush to the text. A crop box pulled exactly to the last glyph leaves a page that feels airless. A small, even margin reads better and prints better.
- Not keeping the source file. The download reflects the crop. Cropping adjusts the page box rather than deleting content, so a PDF editor can sometimes restore the original bounds — but keep your original if you might need the full page back.
- Assuming cropping hides sensitive content. Cropping only changes what is displayed. The trimmed-away pixels and text still exist in the file. To truly remove information, redact it — do not rely on a crop.
Troubleshooting
Will the cropped text still be selectable?
Yes. Cropping adjusts each page's crop box rather than rasterizing the page, so vector text and graphics stay crisp. You can still select, copy, and search the text in the cropped PDF — the crop is lossless.
Can I crop only some pages instead of all of them?
Yes. By default one crop box applies to every page, but you can open the page selector and tick only the pages you want cropped. That is handy when a scan has a few odd-sized pages among otherwise uniform ones.
My cropped file is the same size as the original. Did the crop work?
It worked. Cropping changes the visible page box, not the underlying content, so the file size stays roughly the same. If your goal is a smaller file, run the cropped PDF through the compress tool afterwards.
Does the crop tool work on scanned PDFs?
Yes. Scanned PDFs are image pages, and the crop box trims them just the same. The image itself is not re-encoded, so the quality inside the crop is unchanged — you are simply tightening the page box around it.
Does my PDF get uploaded anywhere?
No. The PDF bytes never leave your browser — the file is read, re-boxed, and re-serialized inside your tab. Open DevTools, Network tab while you crop and you will see zero requests carrying the document.
Ready to crop?
Open the crop tool and run your file through the five steps above.