PDF Watermark Tool
Add custom watermark with position preview and provide feedback.
How to Use:
- Upload your PDF using the “Upload PDF” button.
- Enter the watermark text you want to appear on all pages.
- Adjust the opacity (0 = invisible, 1 = fully visible).
- Select the position: Center, Top-Left, Top-Right, Bottom-Left, or Bottom-Right.
- Click “Preview Watermark” to see the watermark on the first page before downloading.
- If satisfied, click “Add Watermark & Download PDF” to get the full watermarked PDF.
FAQs:
- Is my PDF uploaded to any server? No. All processing happens locally in your browser.
- Can I preview all pages? Currently, only the first page is previewed. All pages will have the watermark applied when you download.
- Can I customize font, color, or size? Yes, you can edit the code in the
page.drawText()section for font and color. - Can I rotate the watermark? Default rotation is -45°. Modify the rotate parameter in code if needed.
- Does it work with large PDFs? Yes, but very large PDFs may take a few seconds to process.
- Can I add image/logo watermarks? Not in this version. Future versions will support image watermarks.