How do you disable viewport zooming on Mobile Safari?

Question

I've tried all three of these to no avail:

<meta name=”viewport” content=”width=device-width; initial-scale=1.0; maximum-scale=1.0; user-scalable=0;” />

<meta name=”viewport” content=”width=device-width; initial-scale=1.0; maximum-scale=1.0; user-scalable=false;” />

<meta name=”viewport” content=”width=device-width; initial-scale=1.0; maximum-scale=1.0; user-scalable=no;” />

each are different values I found recommended by google searching or SO searching, but none of the 'user-scalable=X' values seem to be working

I also tried comma delimiting the values instead of semicolon, no luck. Then I tried ONLY having the user-scalable value present, still no luck.

---

UPDATE

Got this from Apple's site and it works:

<meta name="viewport" content="width=device-width, user-scalable=no" />

it turns out that the problem was the non-standard quotes because I had copied the meta tag from a website that was using them, whoops

Answer 1

Your code is displaying attribute double quotes as fancy double quotes. If the fancy quotes are present in your actual source code I would guess that is the problem.

This works for me on Mobile Safari in iOS 4.2.

<meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=no" />

Answer 2

For the people looking for an iOS 10 solution, user-scaleable=no is disabled in Safari for iOS 10. The reason is that Apple is trying to improve accessibility by allowing people to zoom on web pages.

From release notes:

To improve accessibility on websites in Safari, users can now pinch-to-zoom even when a website sets user-scalable=no in the viewport.

So as far as I understand, we are sh** out of luck.

Answer 3

@mattis is correct that iOS 10 Safari won't allow you to disable pinch to zoom with the user-scalable attribute. However, I got it to disable using preventDefault on the 'gesturestart' event. I've only verified this on Safari in iOS 10.0.2.

document.addEventListener('gesturestart', function (e) {
    e.preventDefault();
});

Answer 4

Using the CSS touch-action property is the most elegant solution. Tested on iOS 13.5 and iOS 14.

To disable pinch zoom gestures and and double-tap to zoom:

body {
  touch-action: pan-x pan-y;
}

If your app also has no need for panning, i.e. scrolling, use this:

body {
  touch-action: none;
}

Answer 5

for iphones safari up to iOS 10 "viewport" is not a solution, i don't like this way, but i have used this javascript code and it helped me

 document.addEventListener('touchmove', function(event) {
    event = event.originalEvent || event;
    if(event.scale > 1) {
      event.preventDefault();
    }
  }, false);

Answer 6

I got it working in iOS 12 with the following code:

if (/iPad|iPhone|iPod/.test(navigator.userAgent)) {
  window.document.addEventListener('touchmove', e => {
    if(e.scale !== 1) {
      e.preventDefault();
    }
  }, {passive: false});
}

With the first if statement I ensure it will only execute in iOS environments (if it executes in Android the scroll behivour will get broken). Also, note the passive option set to false.

Answer 7

user-scalable=0

This no longer works on iOS 10. Apple removed the feature.

There is no way yo can disable zoom website on iOS now, unless you make gross platform app.

Answer 8

Try adding the following to your head-tag:

<meta name="viewport" content="width=device-width, initial-scale=1.0, 
minimum-scale=1.0, maximum-scale=1.0, user-scalable=no">

additionally

<meta name="HandheldFriendly" content="true">

Finally, either as a style-attribute or in your css file, add the following text for webkit-based Browsers:

html {
    -webkit-text-size-adjust: none
}

Answer 9

I managed to stop this behavior by adding the following to the HTML header. This works on mobile devices, as desktop browsers support zooming when using the mouse wheel. It's not a big deal on desktop browsers but it's important to take this into account.

<meta name="viewport" content="width=device-width, initial-scale=1.0, minimum-scale=1.0, maximum-scale=1.0, user-scalable=no" />

and the following rule to the CSS stylesheet

html {
	-webkit-text-size-adjust: none;
	touch-action: manipulation;
}

Answer 10

Actually Apple disabled user-scalable=no on latest iOS versions. I tried as guideline and this way can work:

body {
  touch-action: pan-x pan-y;
}

Answer 11

This works fine in IOS 10.3.2

    document.addEventListener('touchmove', function(event) {
        event = event.originalEvent || event;
        if (event.scale !== 1) {
           event.preventDefault();
        }
    }, false);

thank you @arthur and @aleclarson

Answer 12

In Safari 9.0 and up you can use shrink-to-fit in viewport meta tag as shown below

<meta name="viewport" content="width=device-width, initial-scale=1.0, shrink-to-fit=no">

Answer 13

sometimes those other directives in the content tag can mess up Apple's best guess/heuristic at how to layout your page, all you need to disable pinch zoom is.

<meta name="viewport" content="user-scalable=no" />

Answer 14

As mentioned this solution basically works as of late 2020:

document.addEventListener(
    'gesturestart', (e) => e.preventDefault()
);

But the downside is that while you are scrolling you'd still be able to pinch and then it gets stuck. The solution is to disable scrolling.

body {
    overflow: hidden;
}

But, what if you still wanted the page to be scrolled? You can still do it with another <div> set as overflow:auto:

<body>
    <div id='app'></div>
</div>

and then

body {
    overflow: hidden;
}

 #app {
     -webkit-overflow-scrolling: touch;
      height: 100vh;
      height: -webkit-fill-available;
      overflow: auto;
 }

Answer 15

I foolishly had a wrapper div which had a width measured in pixels. The other browsers seemed to be intelligent enough to deal with this. Once I had converted the width to a percentage value, it worked fine on Safari mobile as well. Very annoying.

.page{width: 960px;}

to

.page{width:93.75%}

<div id="divPage" class="page">
</div>

Answer 16

In order to comply with WAI WCAG 2.0 AA accessibility requirements you must never disable pinch zoom. (WCAG 2.0: SC 1.4.4 Resize text Level AA). You can read more about it here: Mobile Accessibility: How WCAG 2.0 and Other W3C/WAI Guidelines Apply to Mobile, 2.2 Zoom/Magnification

Answer 17

This one should be working on iphone etc.

<meta name="viewport" content="width=device-width, initial-scale=1 initial-scale=1.0, maximum-scale=1.0, user-scalable=no">