# Underline PDF

> Add visible underlines to PDF text lines or page areas locally with color, stroke, page range, and browser-only export controls.

Canonical: https://helpers.aibrush.co/en/underline-pdf

## Options

Underline color and stroke width controls.

X, Y, width, and line box placement.

Selected page ranges or all pages.

Local export with before and after size details.

## How to underline a PDF

1. **Upload PDF** — Upload one PDF and choose target pages.
2. **Position line** — Position the underline under text or an image-only area.
3. **Set style** — Set the underline color and stroke width.
4. **Export** — Export and download the underlined PDF.

## FAQ

### Can I underline scanned PDFs?

Yes. This places visible line overlays, so it works on image-only pages.

### Can I change the color?

Yes. Choose any underline color and stroke width before exporting.

### Are my PDFs uploaded?

No. Inspection, preview, and export run in your browser.