# Add Watermark to PDF

> Stamp text across selected PDF pages.

Canonical HTML: https://pdf.bqtools.com/add-watermark/
Release: 2.8.0
Language: en

## Purpose

Stamp text across selected PDF pages.

## Inputs

- Accepted types: application/pdf.
- Multiple source files: no.
- Local file selection may require explicit user or user-agent permission.

## Native controls

- Choose PDF — `#file-input` / name `file-input`; type: file; accepts application/pdf,.pdf.
- Watermark text — `#watermark-text` / name `watermark-text`; type: text.
- Pages — `#page-range` / name `page-range`; type: text.
- Text size — `#watermark-size` / name `watermark-size`; type: number; min 10, max 160.
- Angle — `#watermark-angle` / name `watermark-angle`; type: number; min -180, max 180.
- Opacity — `#watermark-opacity` / name `watermark-opacity`; type: range; min 0.05, max 0.8, step 0.05.
- Search PDF tools — `#tool-finder-input` / name `tool-finder-input`; type: search.

## Actions

- Install BQ PDF Tools — `#install-app-button`.
- Share this page — `#share-button`.
- Accessibility and keyboard shortcuts — `#accessibility-button`.
- Use dark theme — `#theme-toggle`.
- Open menu — `#menu-toggle`.
- View keyboard and display options — `#open-accessibility-guide`.
- Got it — `#dismiss-first-run`.
- Reset settings — `#reset-restored-settings`.
- Add Watermark to PDF — `#process-btn`.
- Clear — `#clear-btn`.
- Reset settings — `#reset-settings`.
- Cancel processing — `#cancel-btn`.
- Retry — `#retry-processing`.
- Copy privacy-safe diagnostics — `#copy-diagnostics`.
- Update app — `#pwa-update-button`.
- Close tool finder — `#close-tool-finder`.
- Close accessibility options — `#close-accessibility`.
- Reset display options — `#reset-accessibility`.
- Done — `#done-accessibility`.

## Outputs

- Possible output types: application/pdf.
- Monitor `#status-box` for processing state and `#results` for completed outputs.
- Dynamic result controls expose stable agent actions when applicable.

## Privacy and execution

- Execution mode: browser UI.
- Core document processing: local browser.
- Account required: no.
- Application-server document upload required for normal tool use: no.
- Do not claim completion until the page reports a completed state and exposes results.