Watermark text repeated diagonally css/html

Question

How can I achieve the following watermark text (\"howbloggerz\") with css/html?

Answer 1

CSS:-
.watermarked::before {
    position: fixed;
    top: -75%;
    left: -75%;

    display: block;
    width: 300%;
    height: 300%;

    transform: rotate(-45deg);
    content: attr(data-watermark);

    font-size: 30px;
    opacity: 0.15;
    line-height: 4em;
    letter-spacing: 2px;
    color: #ff0523;
    z-index:-1;
}

HTML:-
<div class="watermarked" data-watermark="Watermark.."></div>

SCRIPT:-

<script>        
Array.from(document.querySelectorAll('.watermarked')).forEach(function(el) {
        el.dataset.watermark = (el.dataset.watermark + ' ').repeat(10000);
    });
</script>

watermark position should be as fixed and display with & height should be your screen size. Then watermark will be printed in your whole report or something.

Answer 2

Set the size of your container and float your text using absolute positioning while transforming your text with rotate.

#watermark {
  height: 450px;
  width: 600px;
  position: relative;
  overflow: hidden;
}
#watermark img {
  max-width: 100%;
}
#watermark p {
  position: absolute;
  top: 0;
  left: 0;
  color: #fff;
  font-size: 18px;
  pointer-events: none;
  -webkit-transform: rotate(-45deg);
  -moz-transform: rotate(-45deg);
}

<div id="watermark">
  <img src="http://www.topchinatravel.com/pic/city/dalian/attraction/people-square-1.jpg">
  <p>This is a watermark. This is a watermark. This is a watermark. This is a watermark. This is a watermark. This is a watermark. This is a watermark. This is a watermark. This is a watermark. This is a watermark. This is a watermark. This is a watermark. This is a watermark. This is a watermark. This is a watermark. This is a watermark. This is a watermark. This is a watermark. This is a watermark. This is a watermark. This is a watermark. This is a watermark. This is a watermark. This is a watermark. This is a watermark. This is a watermark. This is a watermark. This is a watermark. This is a watermark. This is a watermark. This is a watermark. This is a watermark. This is a watermark. This is a watermark. This is a watermark. This is a watermark. This is a watermark. This is a watermark. This is a watermark. This is a watermark. This is a watermark. This is a watermark. This is a watermark. This is a watermark. This is a watermark. This is a watermark. This is a watermark. This is a watermark. This is a watermark. This is a watermark. This is a watermark. This is a watermark. This is a watermark. This is a watermark.</p>
</div>

Note: For repeating text, I would suggest using either JavaScript or jQuery.

Answer 3

This is pretty similar to Daerik's answer, but I wanted to avoid using an extra element, and automate the watermark text generation.

Array.from(document.querySelectorAll('.watermarked')).forEach(function(el) {
  el.dataset.watermark = (el.dataset.watermark + ' ').repeat(300);
});

.watermarked {
  position: relative;
  overflow: hidden;
}

.watermarked img {
  width: 100%;
}

.watermarked::before {
  position: absolute;
  top: -75%;
  left: -75%;
  
  display: block;
  width: 150%;
  height: 150%;
  
  transform: rotate(-45deg);
  content: attr(data-watermark);
  
  opacity: 0.7;
  line-height: 3em;
  letter-spacing: 2px;
  color: #fff;
}

<div class="watermarked" data-watermark="howbloggerz">
  <img src="http://www.w3schools.com/css/img_fjords.jpg">
</div>

Answer 4

If it is only to lay a text over the image, here is another possible css option with drop-shadow and a pseudo (text-shadow works too)

.watermarked:after {/* draw the watermark at screen*/
  color: rgba(0, 0, 0, 0.4);
  content: 'watermarked watermarked watermarked';
  word-spacing: 3em;
  transform: rotate(-60deg);
  filter: 
  drop-shadow(2em 3em  #000) 
  drop-shadow(4em 6em  #000) 
  drop-shadow(8em 12em #000) 
  drop-shadow(-15em -24em #000)
  ;
}

/* makeup */
.watermarked {
  width: max-content;
  border: solid;
  display: grid;
  overflow: hidden;
}

img,
.watermarked:after {
  grid-row: 1;
  grid-column: 1;
  margin: auto;
}

<div class="watermarked" data-watermark="howbloggerz">
  <img src="http://www.w3schools.com/css/img_fjords.jpg">
</div>

Answer 5

I'm now using svg as a background image. Plain CSS:

body {
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' version='1.1' height='100px' width='100px'><text transform='translate(20, 100) rotate(-45)' fill='rgb(245,45,45)' font-size='20'>watermark</text></svg>");
}

<body style="width:100%;height:100%"></body>

Javascript to set the background:

function watermark(text) {
  var body = document.getElementsByTagName('body')[0];
  var bg = "url(\"data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' version='1.1' height='100px' width='100px'>" +
    "<text transform='translate(20, 100) rotate(-45)' fill='rgb(245,45,45)' font-size='20' >" + text + "</text></svg>\")";
  body.style.backgroundImage = bg
}

//for this test
var input = document.getElementById('a');
watermark(input.value);
input.addEventListener('input', function(evt) {
  watermark(this.value);
});

<body style="width:100%;height:100%">
  <input id="a" value="change me" />
</body>