Remove white margins round PDF pages so text fills a phone or e-reader screen
Processed in your browser. Nothing is uploaded. Updated on 24 Oct 2026.Wide white margins make a PDF hard to read on a phone or an e-reader: the text shrinks to fit paper that is mostly empty. This page finds where the printing starts and stops on the page and sets the crop to it, with a small border so no letter touches the edge. Check the other pages in the preview, then crop every page at once. The text stays sharp and selectable.
Press Select a PDF; the white margins round the first page are found and the crop box is set to the content.
Look at the box on the page and press the arrows to check the other pages; drag a handle if any text is cut.
Leave the pages on All, or choose Odd or Even for a scanned book with different margins on each side.
Press Crop PDF and download the trimmed file.
Crop PDF cuts the edges off the pages of a PDF: wide white margins, a printer's crop marks, a scanner's dark border, or everything but the one table you need. Draw the box on the page, or type the margin for each side in millimetres, inches or percent of the page, and see the result on the page before you save.
Trim white margins. One button renders the page, finds where the printing starts and stops, and sets the box to it with a small border. Look at the other pages with the arrows before cropping, since a page with a page number in the corner keeps that corner.
How the crop works. Every PDF page has a crop box that tells readers which part to show. This tool sets that box and redraws nothing: text stays sharp and searchable, links keep working, and the file stays about the same size. The hidden part is still in the file, which also means a crop can be undone. If you need the hidden content gone, use Redact PDF instead. Turn on Also change the page size when a printer or editor ignores the crop box; the media box is then cut to the same size.
The rest of the article, and all 6 questions about Crop PDF, are on the Crop PDF page.
Yes. Choose Odd, Even, or These pages and type a list such as 1-3, 5, 8-. Pages not in the list are left exactly as they were. Odd and Even suit scanned books, where the wide margin falls on the left of one page and the right of the next.
No. Cropping sets the box a PDF reader shows and redraws nothing, so text stays sharp, selectable and searchable at any zoom, and links keep working. The file size stays about the same, because the pages themselves are not changed.
No, a crop hides it. Every PDF page has a crop box that readers obey, and only that box changes, so a crop can be undone. To remove text or pictures for good, for example before sharing a document, use Redact PDF, which deletes what it covers.
Press Trim white margins. The page is rendered on your device, the edges of the printing are found, and the crop box is set round them with a small border. Check the other pages with the arrows, then crop. A page number in a corner counts as printing and is kept.
Still stuck? Ask about Crop PDF and anybody who knows can answer. No account needed.
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