Add watermark to PDF online

Add a text watermark to PDF pages in your browser.

Use text such as Draft, Confidential, Sample, or your name. Set opacity and size before downloading a new PDF.

Watermark PDF files locally

1. Choose the matching PDF tool.
2. Add local PDF, JPG, or PNG files.
3. Set page ranges, order, or output options.
4. Process locally and download the result.

Quality checklist for Add watermark to PDF online

• Use the default example to confirm the tool matches this exact PDF task.
• Check page ranges, ordering, rotation, watermark text, and output name before export.
• Keep documents local and avoid pasting or uploading private records to public tools.
• Open a related workflow if the next step needs merging, splitting, compression, or cleanup.

Are my PDF files uploaded?

No. The core tools run in your browser with local file APIs. Static hosting may receive normal page requests, but the selected PDF files are not sent to an upload server.

What file size works best?

Small and medium PDFs work best in a browser. Very large PDFs can use a lot of memory, especially on older phones.