🍋 PDF Tools
Watermark PDF
Add a text watermark to PDF pages.
🍋
Drop
🫸
Squeeze
🍹
Fresh!
🍋
Drop Your Lemons Here
Drag & drop files here
— or —
PDF
⚙️ Squeeze Settings
🍋
About Watermark PDF
Add a diagonal text watermark to all or specific pages in a PDF. Customize the text, opacity, rotation, color, and font size. Common uses include marking documents as CONFIDENTIAL, DRAFT, or SAMPLE.
How It Works
The tool uses pdf-lib to draw semi-transparent text across each page. The watermark is rendered as an overlay — existing content is not modified. You can control opacity to make the watermark subtle or prominent.
Step by Step
- 1 Upload a PDF file
- 2 Enter watermark text (e.g. CONFIDENTIAL)
- 3 Adjust opacity, color, and rotation
- 4 Optionally specify which pages to watermark
- 5 Click Watermark and download the result
Tips
- 30% opacity works well for most documents — visible but not distracting.
- Use -45° rotation for classic diagonal watermarks.
- Gray color is the most professional choice for business documents.
- Leave pages empty to watermark every page.
Frequently Asked Questions
Can I remove a watermark added by this tool?
No. The watermark is permanently drawn on the PDF pages. Keep your original file if you may need the unwatermarked version.
Can I use custom fonts?
The watermark uses Helvetica, which is built into pdf-lib and available in all PDF viewers.