Crop PDF
Crop PDF
Trim visible page margins using a crop box over the PDF preview.
Privacy
Your documents do not leave your device.
PDFTasker runs in your browser. No uploads. No server detour. No tricks.
Crop guide
- 1. Load the PDF and check the first page preview.
- 2. Drag or resize the crop box over the area to keep.
- 3. Apply it to the current page, all pages, or a custom range.
Load document
Document to crop
Load a PDF. The preview and crop export both stay in your browser.
Drop files here, or tap to choose them.
Crop preview
Set the area to keep
Move the box or drag its corner. The selected rectangle becomes the PDF CropBox.
Preview
The document preview will appear here
Load a PDF. The preview and crop export both stay in your browser.
Apply crop to
Trim page margins visually
Crop PDF Pages in Your Browser
Scanned pages come with crooked edges and grey borders. A slide exported to PDF has wasted margins. A statement has a header you would rather trim before sharing one figure. Cropping a PDF tightens the visible area, and it is easiest when you can drag a box over the actual page. PDFTasker does that in the browser with a live preview, and exports the trimmed PDF without the file leaving your device.
Privacy and trust
Crop coordinates are local
Cropping means working over the real pages of a document that may be sensitive — a bank statement, a contract, a scanned ID. PDFTasker keeps both the preview and the final crop entirely local: you position the crop box on the page in the browser, and the new CropBox is written into a copy on your device. Nothing is uploaded just to trim a margin.
How to use it
How to crop a PDF
- 01Load the PDF you want to crop.
- 02Adjust the crop box on the page preview.
- 03Choose whether to crop the current page, all pages, or a custom range.
- 04Export the cropped PDF locally.
FAQ
Crop PDF FAQ
Does cropping delete content from the PDF?
Cropping sets the PDF CropBox so viewers show the selected region. It is meant for trimming visible margins, scanner borders, or extra whitespace. Do not treat it as secure redaction, because hidden or out-of-view content may still exist inside the file structure after export before sharing.
Can I crop all pages at once?
Yes. You can apply the same crop box to all pages or choose a custom range. This works best when the pages have a consistent scan border. If page layouts vary, crop in smaller groups and inspect the output so headings, signatures, or page numbers are not cut off.
Does the crop preview upload pages?
No. Preview rendering and CropBox export both run in your browser. The file is read from your device, the visible crop area is prepared locally, and the exported PDF downloads back to you. Cropping margins should not require sending the whole document to a remote processor.
Can I crop out private information safely?
Not as a privacy guarantee. Cropping changes what a PDF viewer displays, but it is not the same as redaction or metadata cleanup. If the original page contains sensitive text, assume the information may still be recoverable unless you use a proper redaction workflow outside this crop tool.
What should I check after cropping?
Open the exported PDF and scan the page edges at normal zoom. Check headers, footers, signatures, stamps, barcodes, and page numbers. A crop can look fine in thumbnails while cutting off useful details, especially when scanned pages are slightly tilted or have uneven margins before sharing.
Will cropping reduce the file size?
Not by much on its own. Cropping changes the visible boundary of the page — the crop box — rather than deleting the underlying page data, so the trimmed margins still live in the file. That design is also what makes the crop non-destructive. If the goal is a smaller file as well as a tighter page, run the cropped PDF through compress afterward; the two tools chained together handle the layout and the size in one short workflow.