Watermark
Stamp text diagonally across the page.
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Drag a PDF here, or click to choose
Any text — Korean (Hangul) and other Unicode characters are supported
How to add a watermark to a PDF
- Drop a PDF file into the dropzone.
- Enter the watermark text, and adjust size, opacity and diagonal placement.
- Click "Stamp" to download the watermarked PDF.
FAQ
Is my file uploaded to a server?
No — everything runs locally in your browser; your file never leaves your device.
Can I use Korean text in the watermark?
Yes — a Korean-capable font is embedded into the PDF automatically, so Hangul renders correctly.