# Clean Scanned PDF

> Clean scanned PDF pages locally with deskew, auto-rotate, shadow cleanup, noise removal, contrast, grayscale or black-and-white conversion, crop, and before-and-after preview.

Canonical: https://helpers.aibrush.co/en/clean-scanned-pdf

## Options

Deskew and auto-rotate are local heuristics that apply only when the page signal is confident.

Shadow cleanup, noise removal, contrast boost, grayscale, black-and-white, and crop controls.

Before-and-after preview keeps the source untouched until export.

Output is rebuilt as page images; run OCR PDF afterward if you need searchable text.

## How to clean a scanned PDF

1. **Upload PDF** — Upload a scanned or camera-created PDF.
2. **Choose mode** — Choose color, grayscale, or black-and-white cleanup.
3. **Adjust options** — Keep or adjust deskew, auto-rotate, shadow, noise, contrast, and crop options.
4. **Clean** — Clean locally, compare the before-and-after preview, and download the copy.

## FAQ

### Are scanned PDFs uploaded?

No. Rendering, cleanup, preview, and export run in your browser.

### Does this change my original PDF?

No. The original remains untouched until you download a separate cleaned PDF.

### Can cleanup overprocess a scan?

Yes, especially black-and-white mode on faint handwriting or stamps. Use the preview before replacing your working file.