Watermarks and embossing

Security watermarks with the printing user and time, repeated over the page, and web embossing of seals and logos on screen, paper and PDF.

A watermark is a string or settings, or a list of them. Because the text is a template, a security watermark can carry who printed the page and when, repeated over the page so a photo or copy still shows it.

"watermark": [
  { "text": "{params.user} · {format(now(), 'yyyy-MM-dd HH:mm')} 출력", "repeat": true, "opacity": 0.07, "fontSize": 10, "gap": 40 },
  { "text": "사 본", "fontSize": 110, "color": "#c8102e", "pages": "all" }
],
"emboss": { "text": "(주)세컨드코리아 대표이사 직인 ·", "centerText": "인증", "x": 140, "y": 240, "w": 34 }

Name	Type	Description
`text`	`string`	Template, e.g. "{params.user} · {format(now(), 'yyyy-MM-dd HH:mm')}".
`image, imageWidth`	`string, number`	Image mark instead of (or with) text; width in mm.
`repeat, gap`	`boolean, number`	Tile over the page (security pattern); distance in mm (default 45).
`opacity, angle, color, fontSize, bold`	`—`	Default opacity 0.12, angle -35°.
`pages`	`'all' \| 'first' \| 'last' \| 'odd' \| 'even'`	Which pages.
`layer`	`'back' \| 'front'`	Behind the content (default) or over it.

Web embossing

Embossing draws a raised seal, logo or text with light and shadow, like a stamp pressed into paper. It appears on screen, in print and in the PDF.

Name	Type	Description
`text, centerText`	`string`	Text around a round seal and in its centre (templates allowed).
`image`	`string`	A logo turned into a relief.
`x, y, w, h`	`number`	Position and size in mm (default a 32mm seal near the bottom right).
`shape`	`'circle' \| 'rect' \| 'none'`	Outline.
`depth, color, opacity, fontSize, pages`	`—`	Relief depth in mm (default 0.3), paper tone, opacity, pages.