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Find centralized, trusted content and collaborate around the technologies you use most. Connect and share knowledge within a single location that is structured and easy to search. How can I detect the page zoom level in all modern browsers?

Firefox stores the page zoom level for future access. On the first page load, would I be able to get the zoom level? Somewhere I read it works when a zoom change occurs after the page is loaded.

This page alerts different height values when zoomed. Now it’s an even bigger mess than it was when this question was first asked. From reading all the responses and blog posts I could find, here’s a summary. I also set up this page to test all these methods of нажмите для продолжения the zoom level. This will give you browser zoom percentage level on non-retina displays. When I made my window small and zoomed into my site such that horizontal scrollbars appeared, document.

This is because document. Using window. How to zoom out the whole desktop or screen – none: some reason in Chrome, outerWidth is measured in screen pixels and innerWidth is measured in css pixels. In addition, we also dynamically created a svg element and check its currentScale property.

It works great on Chrome how to zoom out the whole desktop or screen – none: likely most browsers too. On FF the “zoom text only” feature has to be turned off though. SVG is supported on most browsers. I found this article enormously helpful. Huge thanks to yonran. I wanted to pass on some additional learning I found while implementing some of the techniques he provided.

In FF6 and Chrome 9, support for media queries from JS was added, which can greatly simplify the media query approach necessary обычно, zoom meeting codes to join now – none: вам determining zoom in FF. See the docs at MDN here. For my purposes, I only needed to detect whether the browser was zoomed in or out, I had no need for the actual zoom factor. I was able to get my answer with one line of JavaScript:.

I have a solution for this as of Jan The principle is as follows. Collect 2 MouseEvent points that are far apart. Each mouse event comes with screen and document coordinates. Measure the distance between the 2 points in both coordinate systems. Although there are variable fixed offsets between the coordinate systems due to the browser furniture, the distance between the points should be identical if the page is not zoomed.

The reason for specifying “far apart” I put this as 12 pixels is so that small zoom changes e. Only do the distance calculations rarely, e. Limitations: Assumes user will move the mouse at least a little, and zoom is unknowable until this time. It is standard and works both on desktop and mobile: browser support. If you need to detect zoom level that might be a sign of bad UI design. On mobile devices with Chrome for Android or How to zoom out the whole desktop or screen – none: Mobile you can detect zoom by window.

Detect on Safari: document. Your calculations are still based on a number of CSS pixels. They’re just a different size on the screen now. That’s the point of full page zoom. What would you want to happen on a browser on a dpi device which therefore normally displayed four device pixels how to zoom out the whole desktop or screen – none: each pixel in an image?

This is for Chromein the wake of user answer But this approach has limitations : for example if you play the accordion with the application window rapidly enlarge and reduce the width of the window then you will get gaps between zoom levels although the zoom has not changed may be outerWidth and innerWidth are not exactly updated in the same time. If you как сообщается здесь the zoom level right after the pinch move, you will probably have to set a little timeout because of the rendering delay but I’m not sure because I didn’t test it.

This answer is based on comments about devicePixelRatio coming back incorrectly on user’s answer. I found that this command was coming back incorrectly in some instances too when working with больше на странице desktop, Surface Pro 3, and Surface Pro 4. What I found is that it worked on my desktop, but the SP3 and SP4 were giving different numbers from each other and the desktop. I noticed though that the SP3 was coming back as 1 and a half times the zoom level I was expecting.

So, the solution to the comments should be to divide the returned zoom level by the scale of the machine you are currently on. Have it currently working however still need to separate by browser. Tested successfully on Chrome 75 and Safari It also gets the zoom value correct on retina display and calculations are triggered on resize event. Zoom factor and scale are not to be confused with each other.

Users control “zoom”; “scale” is a CSS transformation. This does that. I use it in conjunction with media queries to detect in JavaScript device scaling, i. I used a different approach, i created a dom element with a fixed height and width of px, position fixed and opacity of 0, basically a hidden element. From my page I had to link to JQuery and this file to get it work, even though my master page already had a link to JQuery. This is question was posted like ages back, why is my zoom background not showing up today when i was looking for the same answer “How to detect zoom in and out event”, i couldn’t find one answer that would fit all the browsers.

This can be captured using:. The problem lies in the types of monitor used, a 4k monitor vs standard monitor. Chrome is by far the smartest at being able to tell us what the zoom level is just by using window. Other browsers, not so much. IE and Edge are probably the worst, as they handle zoom levels much differently.

As of Mayhere’s what I have to detect zoom levels for a few of the most popular browsers, Chrome, Firefox, and IE I have how to zoom out the whole desktop or screen – none: tell me what the zoom percentage is. If anyone would care to take a stab at other browsers and update the fiddle, then please do so. Stack Overflow for Teams — Start collaborating and sharing organizational knowledge.

Create a free Team Why Teams? Learn more. How to detect page zoom level in all modern browsers? Ask Question. Asked 12 years, 6 months ago. Modified 6 months ago. Viewed k times. Is there a way to trap the ‘zoom’ event? I need this because some of my calculations are pixel-based and they may fluctuate when zoomed. Modified sample given by tfl This page alerts different height values when zoomed. Pellentesque sollicitudin tortor in lacus tincidunt volutpat. Integer dignissim imperdiet mollis.

Suspendisse quis tortor velit, placerat tempor neque. Cum sociis natoque penatibus et magnis dis parturient montes, nascetur ridiculus mus. Praesent bibendum auctor lorem vitae tempor. Nullam condimentum aliquam elementum. Nullam egestas gravida elementum. Maecenas mattis molestie nisl sit amet vehicula.

Donec semper tristique blandit. Vestibulum adipiscing placerat mollis. Improve this question. Vega Basically there is no way to detect zoom in : I have tested all the below solutions on Chrome 78 on Mac Catalina and none of them worked.

Add a comment. Sorted by: Reset how to zoom out the whole desktop or screen – none: default. Highest score default Date modified newest first Date created oldest first. WebKit : broken since r document. To get ratio in terms of device pixels instead of relative to default zoommultiply by window. Old WebKit?

 
 

How to zoom out the whole desktop or screen – none:

 
Linked 4. You hold a modifier key, Ctrl by default, then use the mouse wheel or a two-finger scroll gesture on your trackpad to zoom in and out. It’s better than the IE8 solution in yonran’s answer that didn’t work at all for me.

 

– javascript – How to detect page zoom level in all modern browsers? – Stack Overflow

 

The Picture-in-Picture Zoom also has its own set of options. Use the Zoom style drop-down menu and select Picture-in-Picture Zoom , then click the Options button. The first set of options set the position of the zoomed-in window. You can adjust how the cursor appears in the Picture-in-Picture view. Select System cursor to get the standard macOS pointer. Select Crosshair to see an enlarged crosshair in its place. Click the Adjust Size and Location button to change the size and location of the zoomed-in window.

A preview of the Picture-in-picture window will appear. You can drag any edge or corner to resize the window, or cick and drag within the window to reposition it on the screen. Click OK when you’ve finished resizing and repositioning, then click Done when you’ve finished making all your adjustments. Note: If this does not work it could be because your computer settings are managed by someone else an IT department or administrator for example.

If this is the case you will need to contact them to access these settings or for further help. Our website uses web cookies in order to ensure you are provided with the best experience when navigating on our website. Read more about what cookies are and how they work in our Privacy Policy. This website works best with Javascript. Call our free helpline How to magnify the screen in macOS Short guide. Click the Apple icon in the top-left corner of the screen.

Select System Preferences. Look under Vision in the left-hand column, and click Zoom. Pellentesque sollicitudin tortor in lacus tincidunt volutpat. Integer dignissim imperdiet mollis.

Suspendisse quis tortor velit, placerat tempor neque. Cum sociis natoque penatibus et magnis dis parturient montes, nascetur ridiculus mus. Praesent bibendum auctor lorem vitae tempor. Nullam condimentum aliquam elementum. Nullam egestas gravida elementum. Maecenas mattis molestie nisl sit amet vehicula.

Donec semper tristique blandit. Vestibulum adipiscing placerat mollis. Improve this question. Vega Basically there is no way to detect zoom in : I have tested all the below solutions on Chrome 78 on Mac Catalina and none of them worked.

Add a comment. Sorted by: Reset to default. Highest score default Date modified newest first Date created oldest first. WebKit : broken since r document. To get ratio in terms of device pixels instead of relative to default zoom , multiply by window. Old WebKit? We use the position:fixed element to get the width of the viewport including the space where the scrollbars are ; document.

This is broken since sometime in ; I know no way to get the zoom level in Opera anymore. Improve this answer. Claude 7, 3 3 gold badges 35 35 silver badges 51 51 bronze badges. Very nice work, although this does’t work for me in IE 8. Any chance to wrap all this up in a single function getZoom that works across all browsers?

Perhaps also release as a jQuery plugin? Nice work again. Paul Irish also wrote a similar matchMedia polyfill that is part of Modernizr. Good news, everyone! They finaly did it! Vieport API! The Viewport API only works for pinch-zoom; if you zoom on desktop it says scale is 1. Jason T Featheringham there are reasons other than “discrimination” to want to know the zoom level.

Zoom is set across all pages for a domain, but you might want to handle it differently in a game page or an extension popup than you do in a help page. Show 9 more comments. Clokman 1 1 silver badge 10 10 bronze badges. Works perfect, also on mobile devices. It is also quite interesting to see what mobile devices have what devicePixelRatio.

This also greatly helped me switching a fixed element to absolute ly positioned element when the zoom event occurs, or when the inital value of devicePixelRatio changes. Thank you!! Doesn’t work as expected: It returns in Chrome on MacBook with retina when browser not zoomed. Browsers with support for high DPI screens will not give the expected outcome when using such display, neither will Safari regardless of display. Safari on iMac always returns This doesn’t work on Chrome on Retina displays, as the default value is not 1, but 2.

Different screens with different pixel densities should deliver different values. Show 6 more comments. RamenChef 5, 11 11 gold badges 30 30 silver badges 40 40 bronze badges. Very nice. Well, window. Also, not on every OS the window border width is 8 pixels even on same OS the design can vary. However I would suggest to substract 16, not 8, since you have the window borders twice.

Also, some browser have a border on their actual rendering window like FF and some not Safari – but even this depends on which OS you use the browser e. Safari has a border on Windows. They only see what you allow. You can choose to enable one of those two or disable both.

But at any point during the meeting, the host or other participants of the call can share their entire screen. If they choose to share the entire screen, everyone in the call will see it. This is especially useful for business meetings, presentations, or lectures. Your screen remains private until you decide to enable the sharing screen option on your own device, and no one else can do it for you.

The message will stay at the top of your screen until you stop sharing it. Last modified on Skip to: content search login. Knowledge Base Toggle local menu Menus About the team. Knowledge Base Search. Log in. Options Help Chat with a consultant.