Add Watermark to PDF
Text watermarks with position, opacity and color - CJK support and 45° tilt
Drag & drop files here
or browse files
About this tool
Once a quotation, resume or design draft is forwarded, you cannot get it back - a watermark is the lightest anti-sharing measure there is. This tool stamps your own text watermark on every page: text, size, color, opacity and position are all adjustable, plus an optional 45° tilt for the classic anti-theft look.
Watermark text is rendered by your browser fonts into a crisp transparent layer and embedded into the PDF, so Chinese, English and emoji all display correctly with no font download. Honest caveat: a watermark is visible content - it raises the cost of casual sharing but determined tools can remove it. For sensitive documents, pair it with password protection.
Features
- Text watermark with free size, color and opacity control
- Five positions (four corners and centre) plus a 45° anti-theft tilt
- Chinese, English and emoji render perfectly - no font files to download
- Crisp high-resolution stamping that survives zooming and printing
- Page-by-page local processing - no upload, no signup, no extra watermark
How to use
- Drop or select the PDF you want to watermark
- Type the watermark text and adjust size, color and opacity
- Pick a position (corners or centre) and tick the 45° tilt if wanted
- Click Add watermark - the result downloads automatically
Frequently asked questions
- Does the PDF watermark support Chinese characters?
- Yes. The text is rendered by your browser fonts into a high-resolution transparent layer before being embedded, so Chinese, English, Japanese and emoji all display correctly - no reliance on the PDF standard fonts, so no garbled glyphs.
- Can the watermark be removed?
- Ordinary readers cannot strip it with one click, but professional PDF editors can in principle. Watermarks raise the cost of casual forwarding rather than providing strong secrecy; use password protection for genuinely sensitive files.
- Will the watermark cover the content?
- Set the opacity to 20%-40% with a light grey color for the classic barely-there look that barely affects reading; raise the opacity when you want it loud. Position, size and tilt can be changed and regenerated at any time.
- Can I add an image watermark (logo)?
- The current version supports text watermarks only; image watermarks are not provided yet. For a logo effect, prepare the image with the image tools first, or wait for a future update.