# Trim scanner edges from a PDF

> Trim scanner edges and ADF borders from a PDF in your browser. Scanner-margin preset, drag a crop box. No upload.

ADF borders, cut in this tab

A feeder that kept a black strip, punch holes, or a centimetre of desk around a phone scan. Start with the scanner-margin preset, drag the box if your feeder is worse, apply to every page. Crop runs here. You download a new file.

Free. There is no paid tier. No account. They stay on your computer. Nothing is uploaded.

## When to use this

Use this after a scan that kept the feeder’s black strip, punch holes, or a strip of table around a phone photo. The scanner-margin preset starts about 8 mm in. Drag the box if that is not enough.

Crop changes CropBox and MediaBox so typical viewers hide that area. It is not a forensic wipe. If the overflow is secret, [Redact a PDF](https://lovethispdf.com/redact-a-pdf.md) instead.

Rotate sideways pages first with [Fix a sideways scan](https://lovethispdf.com/fix-sideways-pdf.md), and drop empty backs with [Remove blank pages](https://lovethispdf.com/remove-blank-pdf-pages.md) before you trim. Stay on [Crop PDF](https://lovethispdf.com/tools/crop-pdf.md) if you want a square crop or typed millimetre margins with no scan framing.

## How to do it

1. Drop the scanned PDF. A preview of the current page is drawn locally.
2. Keep the scanner-margin preset, or drag a tighter box on the preview.
3. Apply the same crop to all pages, or only a selection.
4. Trim and download. Nothing was uploaded.

## Tips

- One rectangle for every chosen page. Mixed sizes need a second pass.
- Rotate first so the crop lands on the edge you actually see.
- A determined editor might still recover uncropped content. Redact secrets.

## Questions

### Does crop delete the pixels outside the box?

It sets CropBox and MediaBox so typical viewers hide that area. A determined editor might still recover uncropped content.

### What is the scanner margin preset?

About 8 mm in from each edge, a common ADF leftover. Drag the box if your feeder is worse.

### Does trimming a scan upload it?

No. The crop is written in this tab. Close it and the working copy is gone.

## Related

- [Crop PDF](https://lovethispdf.com/tools/crop-pdf.md): The full crop tool, including square and custom millimetres.
- [Fix a sideways scan](https://lovethispdf.com/fix-sideways-pdf.md): Turn pages upright before you trim the edges.
- [Remove blank PDF pages](https://lovethispdf.com/remove-blank-pdf-pages.md): Delete empty backs, then crop what remains.