PDF Watermark
Insert a diagonal text watermark across every page
도구를 불러오는 중…
🔒 Everything runs 100% in your browser. Your files and input are never uploaded to any server.
This tool adds a diagonal text watermark to every page of a PDF to mark its source or confidentiality. You can freely adjust the color, font size, opacity, and angle.
How to use
- Drag and drop or click to select the PDF you want to watermark.
- Enter the watermark text and set the color, size, opacity, and angle.
- Click 'Add Watermark' to insert it on every page.
- Use the download button to save the result.
FAQ
- Is my file sent to a server?
- No. All processing happens entirely within your browser, and your PDF is never sent to a server.
- Does it support a Korean-language watermark?
- The standard font doesn't support Korean, so the watermark text can use only Latin letters, numbers, and symbols.
- Where does the watermark appear?
- It's inserted diagonally across the center of each page, rotated by the angle you set.