Firefox fails to display some websites properly

On some websites Firefox fails to display graphics

You need to switch to the Media tab in "Tools > Page Info" to see the list that I mentioned. 
If you do not get the Media tab then make sure that you load images.
Tools > Options > Content : [X] Load images automatically
Start Firefox in [[Safe Mode]] to check if one of your add-ons is causing your problem (switch to the DEFAULT theme: Tools > Add-ons > Themes).
* Don't make any changes on the Safe mode start window.
See [[Troubleshooting extensions and themes]] and [[Troubleshooting plugins]]
If it does work in Safe-mode then disable all your extensions and then try to find which is causing it by enabling one at a time until the problem reappears.
* Use "Disable all add-ons" on the [[Safe mode]] start window to disable all extensions.
* Close and restart Firefox after each change via "File > Exit" (Mac: "Firefox > Quit"; Linux: "File > Quit")
>In Firefox 4 Safe mode also disables plugins (Tools > Add-ons > Plugins) and hardware acceleration (Tools > Options > Advanced > General)

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Used windows update, installed 8 updates, FireFox does not display some websites and images correctly.

Hello,
Windows update installed 8 updates to my computer and now several websites are not displaying images or text correctly. Some forum looks like they were loaded in an extreme basic mode, another forum main page looks fine but sub forums are loaded in in the same basic looking mode, another forum only displayed 1 user avatar out of hundreds.
Chat/IRC clients wont load.
Everything works when I used IE.
I tried to follow the help thingies but was led to a dead link.
http://support.mozilla.com/en-US/kb/Firefox%20cannot%20load%20websites%20but%20other%20programs%24%20can
Anybody have any ideas?

If you have increased the minimum font size then try the default setting "none" as a high value can cause issues like you described.
* Tools > Options > Content : Fonts & Colors > Advanced > Minimum Font Size (none)
*Tools > Options > Content : Fonts & Colors > Advanced > [X] "Allow pages to choose their own fonts, instead of my selections above"
Reset the page zoom on pages that cause problems: View > Zoom > Reset (Ctrl+0 (zero); Cmd+0 on Mac)
*http://kb.mozillazine.org/Zoom_text_of_web_pages
You can use one of these extensions to set a default font size and page zoom on web pages:
*Default FullZoom Level: https://addons.mozilla.org/firefox/addon/default-fullzoom-level/
*NoSquint: https://addons.mozilla.org/firefox/addon/nosquint/

My firefox can't display some images properly under Win 8.1x64.

The lower half of some images just can\t display well. I tried disable the hardware acceleration but it didnt help.

Can you attach a screenshot?
*http://en.wikipedia.org/wiki/Screenshot
*https://support.mozilla.org/kb/how-do-i-create-screenshot-my-problem
Use a compressed image type like PNG or JPG to save the screenshot.

Firefox doesn't display my html properly (Like it is looking like on my editor). Explorer displays the page like my html editor.

Hello,
I develop my web site with a html editor. When I use preview, everything is fine. If I use Explorer, everything is fine also but if I use Firefox to display the page, the images and text are not where they should be.

If you use MS software to generate page code then make sure that you disable VML (MS Office) code in the web authoring settings. Otherwise only IE will be able to display that website properly.
You can see VML as green comments in the View > Page Source.
See http://en.wikipedia.org/wiki/Vector_Markup_Language

Why does firefox 4 hang in some websites, during browsing on that site ? This never happened with previous editions.

why does firefox 4 hang in some websites, during browsing on that site ? This never happened with previous editions. edit
Details

Start Firefox in [[Safe Mode]] to check if one of the add-ons is causing the problem (switch to the DEFAULT theme: Tools > Add-ons > Themes).
* Don't make any changes on the Safe mode start window.
See:
* [[Troubleshooting extensions and themes]]
Create a new profile as a test to check if your current profile is causing the problems. 
See [[Basic Troubleshooting#Make_a_new_profile|Basic Troubleshooting: Make a new profile]] 
There may be extensions and plugins installed by default in a new profile, so check that in "Tools > Add-ons > Extensions & Plugins" 
If that new profile works then you can transfer some files from the old profile to that new profile (be careful not to copy corrupted files)
See http://kb.mozillazine.org/Transferring_data_to_a_new_profile_-_Firefox

Suddenly Safari can't render some websites properly.

Suddenly, Safari started to act wierd yesterday. Some websites don't render properly and the formatting is very bad. The problem is Safari, since I have no problems when using Firefox. Here's some pictures:
The websites shown are facebook, Lynapp (photo viewer application) and time for TV (danish online TV guide). To me is seems that elements in the background are misplaced and somehow the font for commenting stuff on facebook is changed to curier or some random mono-spaced font. That's only on my side of course. Also, certain elements on a simple bulletinboard-style forum is highlighted with a clear green color like this:
(Don't mind the red & white boxes, it's the green stuff I mean).
Could it be some problem with CSS or HTML5?
I have tried to disabling WebGL, clearing the cache and doing a complete reinstall of safari but neither of it worked. I don't want to go back to using Firefox because I really like Safari with the awesome iOS integration.
Any ideas?

Select
Safari ▹ Preferences ▹ Extensions
from the Safari menu bar. If any extensions are installed, disable them and test.

Firefox doesn't display some text on certain pages.

I've noticed that on some pages, Firefox doesn't display certain text. I have the newest version of Firefox installed and my flash and java are updated. The text displays fine on Chrome and IE. Please see my example in the screenshots of the stevenson.edu webpage. Does anybody know what I can do to fix this problem or if there is some sort of plugin I am missing to display certain content? Thanks.
Screenshot of Firefox: http://i47.tinypic.com/123359k.jpg
Screenshot of Chrome: http://i48.tinypic.com/2uy3ay1.jpg

Many site issues can be caused by corrupt cookies or cache. In order to try to fix these problems, the first step is to clear both cookies and the cache.
Note: ''This will temporarily log you out of all sites you're logged in to.''
To clear cache and cookies do the following:
#Go to Firefox > History > Clear recent history or (if no Firefox button is shown) go to Tools > Clear recent history.
#Under "Time range to clear", select "Everything".
#Now, click the arrow next to Details to toggle the Details list active.
#From the details list, check ''Cache'' and ''Cookies'' and uncheck everything else.
#Now click the ''Clear now'' button.
Further information can be found in the [[Clear your cache, history and other personal information in Firefox]] article.
Did this fix your problems? Please report back to us!

Flash Player doesn't work on Mozilla Firefox and IE, on some websites.

I followed the thread posted by brawlmanjr on this same topic but nothing worked for me.
Basically, some videos work prolperly on some websites, but on others, there is a black space where the video is embedded, and there is no link to the video.
System: Windows XP
Browser: Mozilla 3.6.8
Flash Player the most recent, just updated.
What do you think I can do?

I have the same problem than you, flash player works fine with some site like facebook, you tube etc and for some other sites like CFL.CA the videos shows only a black or white screen. It's doing the same with IE or FF. If I click on the right button, I get the menu of flash player, but cannot do anything.
I tried the option of flash....no change
I tried uninstalling flash and reinstalling...no change
I tried uninstalling Java and reinstalling...no change
I checked my antivirus, but the doesn't seem to be any option blocking the videos
I am out of ideas, please help me and Heraldo to solve this problem!
I am using Windows XP 5.1.2600
                Internet Explorer 8.0.6001.18702
                Mozilla Firefox 3.6.9
                Flash player 10.1.82.76
                Java 6.0.210.7
                Microsoft security essentials latest update

Intel version's Safari cannot display some website's photos (but PPC cannt)

The Safari (Intel) is not able to display graphics/photos in some websites, (like http://www.fotop.net).
but if running the safari in rosetta mode, it will able to display so.
Can any one help to know want happened?

This MacOSX Hints page shows how to enable the debug menu, which also allows you to change the user agent.
Since the site works fine on Safari 2.0.3 ( 417.9.2) for me, I'd say that the website simply need to update their User Agent identification info to account for the latest versions. But hey - just tell both partys.
Hopefully someone else here with an Intel Mac can confirm if the site works for them.

Firefox 6 does not display some websites correctly that is fonts and immage overlay one another.

Firefox 6 as with previous versions have a tendency to overlay fonts and images. This makes it difficult to read some pages. I sometime use Google and have problems with overlay. I prefer to use Firefox for its open source programming. Perhaps you can look into this and let me know details. If you would like I can send you a couple of websites so you can observe the problem.

If you have increased the minimum font size then try the default setting "none" as a high value can cause issues like you described.
* Tools > Options > Content : Fonts & Colors > Advanced > Minimum Font Size (none)
*Tools > Options > Content : Fonts & Colors > Advanced > [X] "Allow pages to choose their own fonts, instead of my selections above"
Reset the page zoom on pages that cause problems: View > Zoom > Reset (Ctrl+0 (zero); Cmd+0 on Mac)
*http://kb.mozillazine.org/Zoom_text_of_web_pages
You can use one of these extensions to set a default font size and page zoom on web pages:
*Default FullZoom Level: https://addons.mozilla.org/firefox/addon/default-fullzoom-level/
*NoSquint: https://addons.mozilla.org/firefox/addon/nosquint/

Firefox doesn't display Romanian diacritics properly (Google Fonts)

Hello,
I have a blog on Blogger, which is in Romanian. I am using Arimo (Google Font). I tested my blog on several popular browsers (Google Chrome, Opera, even Internet Explorer) to check if the diacritics are displayed properly. They work perfectly on all 3 browsers.
However, on Firefox, only two of them work Î & Â, while the other three (Ș, Ț, Ă) are replaced with another font. What could be the problem? I would love for all my visitors to see the same design, regardless of the browsers they use. Can you help? Thanks in advance.
Here's an image, to better understand my issue - http://i.imgur.com/257QyId.png

The link for my blog is http://ferdy.ro
@guigs2 - thank you filling a bug report.
@cor-el,
As you can see, if you access my blog, it displayes the Arimo font, yet three Romanian diacritics (ș, ț, ă) are displayed with the Arial font. I used the sans-serif trick in my CSS code and it sort of fixes the problem, but not entirely.
Arimo has tons of diacritics (including Romanian diacritics) and special characters, yet this issue occurs only on Firefox and Yandex (tested today), however it is displayed properly in Chrome, Opera and even Internet Explorer.
The 'Allow pages to index...' setting is already enabled on my browser. Also, the Page Inspector generates a 'Not found' for me. This is weird, if it was because of the font, then it shouldn't work on all the browsers.
If there is nothing I can about it, then I'll switch to Arial entirely or keep it this way - it's very important for me to have the same design on all of the browsers.

Mac Safari can't display ikea website properly but iPad Safari can

Anyone noticed this? I was browsing Ikea website on my Mac mini today, and realize the color and buy online option for the furniture can't de displayed on the Mac Safari, but my iPad Safari can display these options without any problem. I thought it's the Mac Safari, so I switched to Firefox, still, no color and buy online options...
Mac Safari screenshot
iPad Safari screenshot

Please read this whole message before doing anything.
This procedure is a diagnostic test. It won’t solve your problem. Don’t be disappointed when you find nothing has changed after you complete it.
The purpose of this exercise is to determine whether the problem is localized to your user account, or is system-wide. Enable guest logins and log in as Guest. For instructions, launch the System Preferences application, select “Help” from the menu bar, and enter “Set up a guest account” (without the quotes) in the search box.
While logged in as Guest, you won’t have access to any of your personal files or settings. Any application you run will behave as if you were running it for the first time. Don’t be alarmed by this; it’s normal. If you need any passwords or other personal data in order to complete the test, memorize, print, or write them down before you begin.
As Guest, launch Safari and test. Same problem(s)?
After testing, log out of the guest account and, in your own account, disable it if you wish. Any files you created in the guest account will be deleted automatically when you log out of it.

Firefox is not displaying some headers, forms, options, and features

For example, there is nothing displayed immediately above this box except 2 short vertical lines. However if I rollover the spaces defined by those lines on the left, center and right: I see that the left shows that there is an option for "Italic", the center space "Insert a Link", and the right "Numbered List". None of these are visible unless I rollover those spaces.

Can you attach a [http://en.wikipedia.org/wiki/Screenshot screenshot]?
Use a compressed image type like PNG or JPG to save the screenshot and make sure that you do not exceed the maximum file size (1 MB).
* If you use extensions (Tools > Add-ons > Extension) like Adblock Plus or NoScript or Flash Block that can block content then make sure that such extensions aren't blocking content.
Start Firefox in [[Safe Mode]] to check if one of the add-ons is causing the problem (switch to the DEFAULT theme: Tools > Add-ons > Themes).
* Don't make any changes on the Safe mode start window.
See:
* [[Troubleshooting extensions and themes]]
See also:
* [[Websites look wrong]]
* [[Website colors are wrong]]

Firefox fails to display text in Captcha box

On pages or sites which require the use of a Captcha system to prevent botnet access the captch image is not displayed in firefox.
If i log in using IE or Chrome I can see them perfectly but not in Firefox
Windows xp sp3 and firefox version 26.0

You have some extensions that might be playing a role in this. For example, if the site is using Google's ReCAPTCHA service, perhaps Google Disconnect or Ghostery could be hiding it?
To test without any influence from extensions, you could try Firefox's Safe Mode. That's a standard diagnostic tool to bypass interference by extensions (and some custom settings). More info: [[Troubleshoot Firefox issues using Safe Mode]].
You can restart Firefox in Safe Mode using
Help > Restart with Add-ons Disabled
In the dialog, click "Start in Safe Mode" (''not'' Reset)
Any difference?

Firefox Not Working on Some Websites (Ex: Hotmail, GMX, WoWhead)

Whenever I log into Hotmail, I am unable to open any of my e-mails. When I go to GMX, the page just loads indefinitely. When I search for something on WoWHead, I can't see anything under the "Contribution" or "Related" fields.
It appears that some sort of plug-in is not working correctly, I am assuming JavaScript. I completely uninstalled both firefox and Java, then reinstalled them. It did not correct the problem. I am also having these problems with IE.

When I reinstalled, I tried it without AddOns. I've also ran Firefox in safemode, along with Internet Explorer. It still didn't work.
Hotmail and GMX Mail work with Internet Explorer, except for that I am experiencing the same problems with both Firefox and IE.

Firefox fails to display some websites properly

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