Is my PDF uploaded to a server?

No. All processing runs locally with pdf-lib directly in your browser — the file never leaves your device.

Does cropping delete content?

No. pdf-lib sets a crop box, which hides the margins visually in viewers that respect it, but the underlying content is not removed from the file.

Uncheck "Apply to all pages" and enter comma-separated page numbers or ranges, for example 1,3,5-7. Pages outside the document are ignored.

Millimeters. For example, entering 10 in the top field removes 10 mm from the top of each page.

Crop the visible area of every PDF page by setting margins in millimeters — client-side, no upload.

100% in your browser No watermark No sign-up

Select a PDF — it never leaves your device.
Enter crop margins in millimeters for each edge (top, right, bottom, left).
Choose whether to crop all pages or a specific range (e.g. 1,3,5-7).
Click "Crop & download" — the crop box is applied in your browser and the PDF downloads.

Is my PDF uploaded to a server?: No. All processing runs locally with pdf-lib directly in your browser — the file never leaves your device.
Does cropping delete content?: No. pdf-lib sets a crop box, which hides the margins visually in viewers that respect it, but the underlying content is not removed from the file.
How do I enter page ranges?: Uncheck "Apply to all pages" and enter comma-separated page numbers or ranges, for example 1,3,5-7. Pages outside the document are ignored.
What units are the margins in?: Millimeters. For example, entering 10 in the top field removes 10 mm from the top of each page.

Combine PDF files into one — private, client-side.

Split a PDF into separate pages or ranges.

Reduce PDF size in the browser.