Reputation: 3697

How can I zoom an HTML element in Firefox and Opera?

The zoom property is working in IE, Google Chrome and Safari, but it’s not working in Firefox and Opera.

Is there any method for adding this property to Firefox and Opera?

Upvotes: 85

Answers (14)

Lucas Tesseron

Reputation: 425

Edit

CSS zoom is now supported by all major browser including Firefox since v126 (May 14 2024)

Original

As mentioned, the zoom property affects positioning differently from one browser to another, while transform functions remain consistent across browsers.

transform:scale function does not distort the natural layout flow.

So when we use the CSS scale, the scaled element will keep its original size in the renderer, and other elements will not reflow around it (as they would if you used the non-standard zoom property).

If this is an issue for you, here is a vanilla JS cross-browser solution to reflect the change of the scale on the width and height of the element by up/down-scaling it at the inputed ratio.

The idea is to wrap the element in a parent container and then use CSS transform to scale the element and translate it to its original position. The JS part will echo the scale change to the wrapper element's width and height to restore element flow.

document.querySelectorAll('[data-scale]').forEach(e =>  {
  const [width, height] = [e.offsetWidth, e.offsetHeight];
  const scale = parseFloat(e.getAttribute('data-scale'));
  e.style.width = `${width * scale}px`;
  e.style.height = `${height * scale}px`;
})

[data-scale] {
  display: inline-block;
}

[data-scale]>.inner {
  transform: translate(calc(-100% / 2 + var(--scale-ratio) / 2), calc(-100% / 2 + var(--scale-ratio) / 2)) scale(var(--scale-ratio));
  width: 10rem;
  padding: 1rem;
  background: tomato;
}

[data-scale='1.2']>.inner {
  --scale-ratio: 120%;
}

[data-scale='0.8']>.inner {
  --scale-ratio: 80%;
}

[data-scale='0.6']>.inner {
  --scale-ratio: 60%;
}

<div data-scale='1.2'>
  <div class="inner">
    <img src="https://placehold.co/60x20/000000/FFFFFF/png" />
    <br>
    <b>Scale 120%</b>
    <p>Transform is consistent across browsers.</p>
  </div>
</div>

<div data-scale='0.8'>
  <div class="inner">
    <img src="https://placehold.co/60x20/000000/FFFFFF/png" />
    <br>
    <b>Scale 80%</b>
    <p>Transform is consistent across browsers.</p>
  </div>
</div>

<div data-scale='0.6'>
  <div class="inner">
    <img src="https://placehold.co/60x20/000000/FFFFFF/png" />
    <br>
    <b>Scale 60%</b>
    <p>Transform is consistent across browsers.</p>
  </div>
</div>

Upvotes: 0

asyncClipboard

Reputation: 31

If your website doesn't need to support Opera 1-12, you can encourage people to upgrade to version 15+.

The situation is slightly worse with Firefox, as it requires version 126, which adds support for zoom. Then you would have to wait until the next 128 edition of ESR is released (With now abandoned Windows 7, 8 and 8.1 support).

Upvotes: 0

WtFudgE

Reputation: 5228

I've been swearing at this for a while. Zoom is definitely not the solution, it works in chrome, it works partially in IE but moves the entire html div, firefox doesnt do a thing.

My solution that worked for me was using both a scaling and a translation, and also adding the original height and weight and then setting the height and weight of the div itself:

#miniPreview {
transform: translate(-710px, -1000px) rotate(0rad) skewX(0rad) scale(0.3, 0.3);
transform-origin: 1010px 1429px 0px;
width: 337px;
height: 476px;

Obviously change these to your own needs. It gave me the same result in all browsers.

Upvotes: 3

Rizwan

Reputation: 4433

try this code to zoom the whole page in fireFox

-moz-transform: scale(2);

if I am using this code, the whole page scaled with y and x scroll not properly zoom

so Sorry to say fireFox not working well using "-moz-transform: scale(2);"

Simply you can't zoom your page using css in fireFox

Upvotes: 1

18C

Reputation: 2110

Only correct and W3C compatible answer is: <html> object and rem. transformation doesn't work correctly if you scale down (for example scale(0.5).

Use:

html
{
   font-size: 1mm; /* or your favorite unit */
}

and use in your code "rem" unit (including styles for <body>) instead metric units. "%"s without changes. For all backgrounds set background-size. Define font-size for body, that is inherited by other elements.

if any condition occurs that shall fire zoom other than 1.0 change the font-size for tag (via CSS or JS).

for example:

@media screen and (max-width:320pt)
{
   html
   {
      font-size: 0.5mm; 
   }
}

This makes equivalent of zoom:0.5 without problems in JS with clientX and positioning during drag-drop events.

Don't use "rem" in media queries.

You really doesn't need zoom, but in some cases it can faster method for existing sites.

Upvotes: 2

Alvaro

Reputation: 1208

I would change zoom for transform in all cases because, as explained by other answers, they are not equivalent. In my case it was also necessary to apply transform-origin property to place the items where I wanted.

This worked for me in Chome, Safari and Firefox:

transform: scale(0.4);
transform-origin: top left;
-moz-transform: scale(0.4);
-moz-transform-origin: top left;

Upvotes: 7

Divam Gupta

Reputation: 228

zoom: 145%;
-moz-transform: scale(1.45);

use this to be on the safer side

Upvotes: 4

user669677

Reputation:

Use scale instead! After many researches and tests I have made this plugin to achieve it cross browser:

$.fn.scale = function(x) {
    if(!$(this).filter(':visible').length && x!=1)return $(this);
    if(!$(this).parent().hasClass('scaleContainer')){
        $(this).wrap($('<div class="scaleContainer">').css('position','relative'));
        $(this).data({
            'originalWidth':$(this).width(),
            'originalHeight':$(this).height()});
    }
    $(this).css({
        'transform': 'scale('+x+')',
        '-ms-transform': 'scale('+x+')',
        '-moz-transform': 'scale('+x+')',
        '-webkit-transform': 'scale('+x+')',
        'transform-origin': 'right bottom',
        '-ms-transform-origin': 'right bottom',
        '-moz-transform-origin': 'right bottom',
        '-webkit-transform-origin': 'right bottom',
        'position': 'absolute',
        'bottom': '0',
        'right': '0',
    });
    if(x==1)
        $(this).unwrap().css('position','static');else
            $(this).parent()
                .width($(this).data('originalWidth')*x)
                .height($(this).data('originalHeight')*x);
    return $(this);
};

usege:

$(selector).scale(0.5);

note:

It will create a wrapper with a class scaleContainer. Take care of that while styling content.

Upvotes: 8

Russ K.

Reputation: 411

For me this works to counter the difference between zoom and scale transform, adjust for the intended origin desired:

zoom: 0.5;
-ms-zoom: 0.5;
-webkit-zoom: 0.5;
-moz-transform:  scale(0.5,0.5);
-moz-transform-origin: left center;

Upvotes: 41

Stone

Reputation: 1

For me this works well with IE10, Chrome, Firefox and Safari:

   #MyDiv>*
   {
        zoom: 50%;
        -moz-transform: scale(0.5);
        -webkit-transform: scale(1.0);
   }

This zooms all content in to 50%.

Upvotes: -1

T.Todua

Reputation: 56351

does this work correctly for you? :

zoom: 145%;
-moz-transform: scale(1.45);
-webkit-transform: scale(1.45);
scale(1.45);
transform: scale(1.45);

Upvotes: 0

Ilya Volodin

Reputation: 11256

Zoom and transform scale are not the same thing. They are applied at different times. Zoom is applied before the rendering happens, transform - after. The result of this is if you take a div with width/height = 100% nested inside of another div, with fixed size, if you apply zoom, everything inside your inner zoom will shrink, or grow, but if you apply transform your entire inner div will shrink (even though width/height is set to 100%, they are not going to be 100% after transformation).

Upvotes: 57

Ronny Sherer

Reputation: 8601

It does not work in uniform way in all browsers. I went to to: http://www.w3schools.com/html/tryit.asp?filename=tryhtml_pulpitimage and added style for zoom and -moz-transform. I ran the same code on firefox, IE and chrome and got 3 different results.

<html>
<style>
body{zoom:3;-moz-transform: scale(3);}
</style>
<body>

<h2>Norwegian Mountain Trip</h2>
<img border="0" src="/images/pulpit.jpg" alt="Pulpit rock"  />

</body>
</html>

Upvotes: 1

Mubeen

Reputation: 2492

Try this code, this’ll work:

-moz-transform: scale(2);

You can refer to this.

Upvotes: 79

How can I zoom an HTML element in Firefox and Opera?

Answers (14)

Edit

Original

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