I am developing a static web app via React.js. I am using the google dev tool to inspect elements. In responsive design mode, everything is fine. However, when I select a specific mobile phone the footer element is not shown when I scroll to the bottom. However, it is visible on the console when ı inspect elements I can see the HTML info. I thought that maybe somehow I fixed the height for mobile devices or smt. Then I tried the firefox dev tool and I am able to see the footer. I have no idea which one is more realistic since I didn't deploy it yet. I deleted the history of browser before I tried.
More specifically; on the chrome dev tool when I select responsive design mode and change the resolution to 375x812 (same as iPhone X), I am able to see my footer. If I select iPhone x rather than responsive design mode, then I don't see it. It is more annoying that, both cases are okay for the firefox tool and I see my footer. So what is the problem ? Why two dev tools act so so differently for the same app and more importantly which one is true ?
Okay, I figured it out. There is a zoom option next to the width and height. It was 100% for my case, which should be "fit to window". I am leaving this dumb question here, it helps if any other beginner faces the same issue.
I have a user who is using my web app on a Surface Pro 4. The app doesn't render very well. The best way I can describe it is that it appears the browser window has been resized to a small size and it's trying to bunch stuff up. However, I believe he has his browser maximized.
Since I don't have a Surface, I've been trying to get both Chrome and Edge to emulate the rendering issues. Here's what I've tried:
Edge: Has a preset for the Surface Pro 4. I figured that once I selected this mode I would see the problem. It's actually the opposite situation. I actually have to expand the browser window to multiple displays to be able to see all the content (even the browser scrollbars). I suspect that's due to the Surface having a higher resolution than my PC.
Chrome: No preset for the Surface and I couldn't find anyone who had the specific settings. I tried 2738 x 1834 and all three of the built-in pixel ratios (1.0, 2.0, 3.0). Chrome zoomed out so that it all fit on my screen. It also had no rendering issues. Changing pixel ratio made no difference.
I'll admit that web UI development is not my strong suit. And it doesn't help that I inherited a lot of this code. But I'm really scratching my head here.
If I try to emulate with a phone preset, then I can see rendering issues because the app isn't phone friendly, nor does it really need to be. That seems to suggest the emulation in the browser is working fine. What's left? The only thing I can think is that he must be using some kind of scaling that's messing things up.
Also, I should note that I had a friend with an iPad (Sorry don't know what model) try the app out as well and he also sees the same bad rendering issues. In fact, he thinks it's rendering worse than the Surface.
Edit 1:
I put together a test page that shows the header from our app. It is here: https://app.astrolabe-analytics.com/surfaceTest
Here are screenshots of the various displays being tested:
Here is Surface Pro 4 Hardware - Notice buttons are wrapping
Next one is iPad Hardware (I don't believe it's the pro version)
Then here is the way I have Chrome set up to emulate the Surface Pro
Surface Pro 4 emulation in Edge. Note that I had to extend the browser window onto my second monitor to take the screenshot.
Finally, the standard appearance in Chrome
It seems that the emulation works well on my side. please check the following screen shots:
Edge emulation for iPad,
Edge emulation for Surface Pro 4,
Chrome emulation for iPad:
Chrome emulation for Surface Pro 4:
Besides, I also found that if we resize the browser window (change the width property), if the width is too small, the text will wrap or disappear. Please check this image:
So, I suppose the issue is related to the CSS style, as a workaround, you could try to set fixed width property (or using the min-width property) for the navbar-nav class, also, you could refer to the following links to use Bootstrap navbar styles:
Bootstrap Navbar
Angular Bootstrap navbar
If I am limited to say a 1920 x 1080 screen, how do I create media queries for a larger screen size without being able to test it?
You can set any resolution in Chrome. Just click "Toggle device mode" in Inspector and set any resolution.
In Chrome Developer Tools, you can use Device Mode to emulate any resolution, not just mobile breakpoints.
If you are using Google Chrome, you can open the web inspector Ctrl-Shift-I, then toggle Device Mode using Ctrl-Shift-M. It's mainly used for smaller devices, but you should be able to select 'Responsive' in the menu that comes up at the top of the screen, and enter any resolution you wish, along with a zoom level so that you can view it on your screen, albeit scaled.
If you are using Safari, you can do this relatively easily.
If you aren't using Safari, you probably should get it, at least for website testing. As you can see on step 6, Safari has LOTS of VERY helpful dev tools (i.e. disable JS, disable CSS, etc.).
Here is some instructions with pictures!
Go to the Safari menu (in upper left hand corner).
On that menu click Preferences, this should open up a pop-up box.
On the pop-up box, click the Advanced tab.
At the very bottom of that tab you should see a checkbox that says Show Develop menu in menu bar, check that box.
Now load your website in Safari.
When your website has loaded (for this example I'm using SO), click on the Develop dropdown menu.
Click Enter Responsive Design Mode, and that will now show your website in a window smaller than your browser window.
In that window, click on the window looking thing on the far left.
There are little gray bars on all sides of that smaller window, if you drag these you can make the size whatever you want.
As a side note, when you drag the gray bars (as shown in step 9), you should see the width and height resolution (pixels) change (see screenshot below), this is VERY helpful (and I use it all the time), as it will tell you the exact resolution (pixels) when your website breaks. P.S. you can go to ANY screen resolution - big and small - that you want to with this tool, which is really cool! (I've done 2500 x 1500, 100 x 100, etc.)
Hope this helps you!
On this page, the images look fine on desktop but are white/not found on mobile devices. I have no idea why this is happening. I'm just calling an img tag but it says its not found on mobile even though it is there
I have checked your files, #MrVimes is correct your should finish your html which will help validate better on slower devices.
However the problem is purely down to size of the image. Chrome Dev tools shows me that they are massive in size, Enable emulator and select iPhone 5 and see what happens. It is just taking a long time to download.
Try using Picturefil.js to serve smaller images or make them smaller in your software application.
This was the picture I got from Google Dev Tools (which is free and amazing):
Also I noticed that your need to change the way the images are handled in CSS, if you open dev tools:
Position:center
Is not valid, maybe set it to relative or static depending on how you want your page structure to look.
I also saw you may want to update your header with this css:
z-index: 99999;
This will make your header appear on top, as the z-index changes the layers of the html elements (much like the fillings in a sandwhich)
sorry my friend but this is false COMPRESSSING THE IMAGES TO 50KB the big images won't appear because your cache browser is full you have to empty your history/cookies/cache of the browser
IOS DEVICE SUPPORT 32 MEGAPIXEL SIZE OF IMAGE IN SAFARI
take a look here for maximum image size and resolution support Apple IOS developper
to delete your cache just go to "Setting=>Safari=>Cleare cache=>clear cache" and that's it
Note: Check the avaible space on your IOS DEVICE should be greater then 50MB
You have to Enjoy the technologie by let the images greater then 1.5mb and works in both of computers/devices
I'm working on putting together a liquid style-sheet and it works wonderful. One thing that I've noticed is that my browser window in Chrome won't resize below 400px it just gets stuck there and in FF as I scale down it it just stops at around 400px and then pops a horizontal scroll bar.
When I open the site on my phone it looks perfect at around 320px, so I know it does scale lower than 400px.
I was curious if anyone knew if this was a browser/desktop thing or if I should be looking at something other than my CSS. I don't have any min-width declarations so i'm not sure what could be causing this.
Again on desktop it scales down to a min-width of about 400px and stops, but when I open it up on my phone it scales to the size of the phone screen which is roughly 320px... curious why at the very least it won't scale down to the 320px on desktop.
-edit-
Also I'm not sure if this matters but Opera allows it to scale down to pretty much nothing... So it works with Opera and not in Chrome or FF... any ideas?
Chrome cannot resize horizontally below 400px (OS X) or 218px (Windows) but I have a really simple solution to the problem:
Dock the web inspector to the right instead of to the bottom
Resize the inspector panel - you can now make the browser area really small (down to 0px)
Update: Chrome now allows you to arrange the inspector windows vertically when docked to the right! This really improves the layout.
The HTML and CSS panels fit really well and you even open a small console panel too.
This has allowed me to completely move from Firefox/Firebug to Chrome.
If you want to go a step further look at the web inspector settings (cog icon, bottom-right), and goto the user agent tab. You can set the screen resolution to whatever you like here and even quickly toggle between portrait and landscape.
UPDATE: Here is another really cool tool I've come across. http://lab.maltewassermann.com/viewport-resizer/
this may be because of the addons you installed on your browser. remove or hide all addon icons from the tool bar and try re size. when there are addons browser only resize the address bar and keeps the addons visible.
Update: 7/14/2013
With the latest chrome version, now you can re-size the address bar and it will hide the addons automatically.
I was stumped as well but ended up with a simple solution. I just created a HTML file with a link to open a new window:
Open!
This new window has nothing but the address bar and Chrome lets me freely resize this down to 111x80.
nayan9's solution works great, and can be put into a bookmark without having to create a html file. In Chrome, create a new bookmark with URL:
javascript:(function(){window.open('ANY_URL', '','width=320,height=480');})();
And give it a name of "Open Small Window" or something similar. This will allow you to easily open windows without size restrictions within chrome. Note that just copying this into your address bar won't work - chrome strips the "javascript:" out.
In case you want to reduce your screen width to emulate different devices (and why else would you want to do this?):
Chrome now has an Emulation section in its inspector, activated by clicking the little phone icon in the top menubar (between the magnifying glass and Elements):
Emulation mode allows you to set the viewport size to all common mobile screen sizes, among other nice features, like emulating touch, geolocation and even accelerometer input:
Adding to what nayan9 and drinkdecaf said, you can just throw document.URL into the call to window.open to see the page you're currently viewing in the 320 window. You might want to add some more to the width if you're expecting a scrollbar.
javascript:(function(){window.open(document.URL, '','width=320,height=480');})();
I am lazy, to make it even easier, let the bookmarklet ask the user for sizes :-D
javascript: (function() {var width = prompt('Enter window width:', '320');var height = prompt('Enter window height:','480');var url = prompt('Enter window URL');if (url.indexOf(':') < 0) {url = 'http://'+url;} window.open(url, '','width='+width+',height='+height);})()
in chrome the icons of your addons in the top right corner cause the problem
-> resize the adress-bar (where you type the urls) to maximum width (drag the bar at the right edge to the right)
or disable the icons
The DevTools in Chrome have moved on substantially from when most of these answers were posted. The best way to address this issue now is to use the emulators that are built into Chrome.
To use the emulators open DevTools (press F12) and then click on the following icon to toggle the Device Toolbar:
This will then allow you to emulate whichever mobile device or viewport size you want to.
I found a quick workaround for this.
Just install the Responsive Web Design Add-on to Chrome, and it will open a separate window without the address bar and tabs, which can be scaled down to 10 px or less.
Link here: https://chrome.google.com/webstore/detail/responsive-web-design-tes/bdpelkpfhjfiacjeobkhlkkgaphbobea/related
I've been experiencing similar issues and just found a good work around. Open up your chrome devtools and in the top left, there's a little screen and ipad icon. Click that and it opens a mobile view of your page. You can set it to predefined devices or a custom resolution. Pretty nifty actually.
Another easy solution is to click Strg+Shift+N to enter Incognito Mode. There you can resize your Browser window as you like.
I like this tool because it lets you switch quickly and also switches between portrait/horizontal easily for mobile sizes. It also allows you to make a personalized bookmark let, so if you design for obscure resolutions frequently, you can save them and use them.
I had to use one of these tools because even with the above answer I couldn't get my window to scale to 320 properly, this tool seems to be a faster solution overall.
http://lab.maltewassermann.com/viewport-resizer/
I'm always running into this issue with pinned tabs. Chrome will not resize below a horizontal width of eight visible pinned tabs if there are any! Just detach the tab that you want to resize to solve this ...
For a web developer, in order to test the responsiveness of their website in mobile or tablet whose size is less than 500px or minimum width then use developer tools to test in small screens.
For testing, go to developer tools and press ctrl+shift+M or click the device icon at the top left of the developer tools screen to toggle device mode. If the device icon is in blue colour, then you can test your website responsiveness by changing the browser window.
This is my first contribution to the Stack Overflow community, and it is my effort to give back to all you wonderful people who have made internet such a powerful tool.
Now to answer:
Safari, has this cool feature.
You need to activate safari developer option in preferences.
Screenshot of setting up preferences in Safari to activate developer menu
Once activated you can access bunch of very powerful developer tools.
One of this tool is Viewport adjustment which can used to test your website responsive layout.
To activate responsive lay out testing, one can use the shortcut Command+Ctrl+R
to activate safari view port adjustment option.
This will give you enough control to test your website on various view port sizes.
Screen shot of how your browser window will look once responsive layout test option is activated.
Link to how to activate developer menu in safari:
https://coolestguidesontheplanet.com/safari-web-developer-tools-show-dock-browser-window/
A lot of smart phones scale the page to fit into their screen size using zooming. Your minimum page width is probably 400px. Without any example code, I think that's all that can be said.