The comic images have a title attribute and show the tooltip on hover for me.

I see that you have the Google toolbar installed and that extension has been reported to cause problems with the tooltip not working.
See Troubleshoot extensions, themes and hardware acceleration issues to solve common Firefox problems

You can try to uninstall and reinstall the latest GT, that has been reported to work.

http://www.google.com/tools/firefox/toolbar/FT5/intl/en/
http://tools.google.com/tools/firefox/toolbar/FT5/intl/en/install.html

Thanks! Of course, Personas then made it difficult to access my add-ons but I have prevailed.  :-)

I'm not using Google toolbar. How do I get text to display on a mouseover an image in Firefox? Thank you

Do those image have a title attribute?

Firefox only displays a tooltip with the title attribute and not with the alt attribute that is meant to show descriptive text in case the image can't be displayed.

Popup ALT Attribute: https://addons.mozilla.org/firefox/addon/1933 Tooltip Plus: https://addons.mozilla.org/firefox/addon/11481

For me the correct answer would be "at this time, Firefox only displays... BUT WE'RE WORKING ON CORRECTING THIS SITUATION, etc."

I mean, if other browsers can do it, I fully expect my favourite browser to offer this feature because without it I'm having to switch to another browser when carrying out certain tasks.

Please consider it!

Thank you.

• http://www.w3.org/TR/html401/struct/global.html#title
• http://www.w3.org/TR/html401/struct/objects.html#alternate-text

I also had this issue pop up recently.. my problem was also due to an extension, but not the Google Toolbar. Mine appears to be due to the Lazurus: Form Recovery extension. Once I disabled it I was able to see the text hover just fine again on all images.

Thanks Cor-el!

It is a real pain in the neck! Yes I suffered that too. In Microsoft IE explorer once the browser encounters the attribute alt="something" it shows the word "something" in a yellow box. However, in new browsers you will need two attributes to show the word "something":

alt="something" title="something"

Otherwise it will not show the text for merely writing the tag:

alt="something"

It is frustrating that Adobe DreamWeaver CS3 (I don't know about the other versions) does NOT show this compatibility issue and does not even automatically add this attribute. I know that many websites will have this problem because we used to neglect the (title=" ") attribute.

Dabbagh

No Google Toolbar for me either.

I get title tooltips in safe mode, but not in normal mode even with every single plugin and add-on disabled.

Using Help->Troubleshooting Information, in safe mode and not, I found that the only differences were in "Direct2D Enabled", "DirectWrite Enabled", and "GPU Accelerated Windows" (strange - I'm only starting FF in safe mode, I'm not changing anything in Windows).

Searching about:config for "direct" I found and set to true the flag "gfx.direct2d.disabled", and tooltips work now, which suggests there is a bug in FF4's use of Direct2D.

I have my tooltips back, but it's going to cost me battery life :-(

My Config: Firefox v12.0 on WinXP SP3.

Problem tracked down for me to Add-on 'TorButton' (v.1.4.5.1) enabled. Mouseover Text Functionality coded with 'Title' HTML Tag works again as soon as the 'TorButton' Add-on is disabled.

(And this solves as well a second problem related to this same Add-on which prevents rearranging Tabs by Drag&Drop...)

(A possible Workaround for Web-Developers is to use the Javascript 'onMouseOver/onMouseOut' Command for the Mouseover Text Functionality which is not affected...)

TorButton Bug Report can be found at: https://trac.torproject.org/projects/tor/ticket/5278

I'm also on FF v12.0, WinXP SP3 - and I also had TorButton 1.4.5.1 enabled; once I disabled it tooltips began working again. Neither disabling Google Toolbar nor disabling Direct2D had any effect, so I re-enabled both with no problems.