Mozilla Firefox 3.5 released

Mozilla has officially released Firefox 3.5 today as predicted earlier this week.

Firefox 3.5 is the first major revision since 3.0 was released about a year ago. The new version sports a faster rendering engine, stability enhancements and a new javascript engine. It will also include support for the most widely-used elements of HTML 5 that allows for offline data access, enhanced web graphics and multimedia playback without plug-ins. The Firefox logo has also had a small revision as well.

Mozilla has been showing different 3.5 features within a 35 day period, and has also shown the new tools developers can take advantage of in the new version.

The new version was originally going to be 3.1, but was renamed to 3.5 later to reflect a greater scope of changes than what had originally been planned.

What's new in 3.5?

According to Mozilla's release notes:

  • Improved tools for controlling your private data, including a Private Browsing Mode.
  • Better performance and stability with the new TraceMonkey javascript engine.
  • The ability to provide Location Aware Browsing using web standards for geolocation.
  • Support for native JSON, and web worker threads.
  • Improvements to the Gecko layout engine, including speculative parsing for faster content rendering.
  • Support for new web technologies such as: HTML5, 'video' and 'audio' elements, downloadable fonts and other new CSS properties, javascript query selectors, HTML5 offline data storage for applications, and SVG transforms.
Download: Firefox 3.5

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112 Comments

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It's annoying how you can't clear the contents of the final tab like you could in v3. Something I'm sure they will re-enable. I like to shut down my browser to a blank page, when finished browsing.

Is anyone else having the issue where the favourites tool bar is hidden. i have all my favourites in folders and since 3.5 the folders are hidden, i can only get to them by pressing the >> icon. most annoying, anyone else had this?

Private Browsing Mode and time interval browsing history deletion.

Is it just me or is Firefox 3.5 geared towards better porn surfing?

splur said,
Private Browsing Mode and time interval browsing history deletion.

Is it just me or is Firefox 3.5 geared towards better porn surfing?

Nothing wrong with that, is there?

is youtube.com/html5 working? im running x64 version of ff3.5 but just see black boxes on the given url.

ive installed latest codec pack as well. no go.

whats up with this?!

pallavsuri said,
is youtube.com/html5 working? im running x64 version of ff3.5 but just see black boxes on the given url.

ive installed latest codec pack as well. no go.

whats up with this?!


youtube won't work on a 64-bit browser as there is no 64-bit flash

Seems it's not working for me either.

Udedenkz, the point of the HTML5 version is that you don't need flash so that isn't the reason.

I'm disappointed by Firefox 3.5, I have used firefox for long time now is time to leave it.


When Opera 10.00 Beta 1 has been available I have installed it and I must say that this is a 100% kick ass browser.



PS mozilla is a corporation I hate corporations

ovd said,
I'm disappointed by Firefox 3.5, I have used firefox for long time now is time to leave it.


When Opera 10.00 Beta 1 has been available I have installed it and I must say that this is a 100% kick ass browser.

PS mozilla is a corporation I hate corporations


yeah, that's normal. Good luck living in a cave with a charcoal sketch of Opera 10.00 Beta 1 on some dried, flattened rat crap.

PS mozilla is a corporation I hate corporations

Psst. Opera Software is a corporation. It's also closed source unlike Firefox, seems you'd like Mozilla better.

Opera isn't bad, but it will never render every site correctly, no matter how many acid tests it passes. That and Opera is a whiny bitch corporation.

Septimus said,
Opera isn't bad, but it will never render every site correctly, no matter how many acid tests it passes. That and Opera is a whiny bitch corporation.



Opera 10 beta 1 show the websites exactly like firefox I don't see any difference, and is loading a lot much faster compared to firefox 3.5 release (and don't forget that opera 10 is still beta 1 )

I have used firefox for years and I must say that can't compete with Opera 10 is not even the same category, firefox must work a lot to get in competition with opera :)

Looks like those of us, who positioned the bookmarks on the very top, are out of luck (the condensed >> effect):

Unfortunately there seems to be a lot more problems with custom toolbar positions when upgrading

Yeah, I'm having problems with that too.. I like to have my bookmarks on the same line as my address bar, but the address bar steals all of its space now!

Wow really great to see this released. I have loved firefox from day one, again and again amazing work from the creators of firefox!! You guys make my browsing so much better thanks!!

Lol, what a thing to say. If I recall IE were last for the tabs and the search box, I somehow doubt Mozilla have 'taken' much from IE.

ASTRALiNI said,
Lol, what a thing to say. If I recall IE were last for the tabs and the search box, I somehow doubt Mozilla have 'taken' much from IE.


I'm not certain if IE was the first to invent the following but it's the first time I've seen them:

Inprivate filtering
The Add Tab button to the right of every tab
A button to bring back lost tabs

Have they implemented aero glass capabilities better? Or will I still have to use the glasser extension ?

gamestargrinder said,
Have they implemented aero glass capabilities better? Or will I still have to use the glasser extension ?

You still need to use that.

E.Fahd said,
I'd like to try it but i'm worrying about the memory footprint as it's the main thing that has always kept me away from Firefox.

How much ram do you have? And whats wrong with a program using your memory when its not used by anything else?

People that claim that they don't use X, Y, Z program/game because it consumes too much memory irk me. What the point of having 4 gigs or ram and only using 1 of it?

Red Dragon said,
I never had a memory problem with FF3. FF3.5 seems to be running a smidge larger, but isn't memory hogging at all.

Just to verify, I run the browser all day (I updated to 3.5 about 6-7 hours ago) for the whole time I had a minimum of 3 tabs open and right now FF is used 103 mbs which I find perfectly reasonable.

Critical Error said,
Sry for a n00b question but, is it better than IE8?

Download it and try it. Install a bunch of extensions. There are no problems uninstalling it, unlike with IE.

toadeater said,
Download it and try it. Install a bunch of extensions. There are no problems uninstalling it, unlike with IE.

you can unistall IE , at least with windows 7 .....

antareus said,
Change the icon on the shortcut to one you extracted from the previous version.

This is on Windows 7 Superbar. How do I do that? I think it's embedded.

edit : solution : Just change the shortcut icon on the shortcut, then pin or re-pin.

After upgrading from RC3 i still have the (build 20090624025744) tag in the menu bar, does anyone else get this issue? As i can't seem to get rid of it.

SnoopZ said,
After upgrading from RC3 i still have the (build 20090624025744) tag in the menu bar, does anyone else get this issue? As i can't seem to get rid of it.

I take it you have installed nightly tester tools, it modifies the menubar to display the build number as well, go into the addons page and take out the build number part

Richardarkless said,
I take it you have installed nightly tester tools, it modifies the menubar to display the build number as well, go into the addons page and take out the build number part

Yer that'll be the problem then! Thanks.

Good update. While it won't pry me off of IE8 and the Opera 10 beta, its good to see FF3 updated and sped up a bit. Since I mainly just use it for web design testing, its nice to not have it running slower than dirt like FF3 did on my setup. Good job, Mozilla!

ran a little test script on ff3.5, faster than ff3.0 on both js and DOM render.
now beats safari/chrome on js speed to become the fastest, but is still behind Opera 10 on rendering speed.

Memory footprint after my stress test is larger than ff3.0's....

Thanks for the heads up. Upgrading...
Says 7.7MB on the release page, but the download file is actually 10.2MB!

Does anyone know how to fix the Google search country redirect? The old method of editing the google.xml file no longer works in 3.5

Jeffhou65 said,
I don't like how they added the "open a new tab" button on the tabs bar, i just like tabs on there damnit.

I find it nice. IE and Google Chrome have it.

Jeffhou65 said,
I don't like how they added the "open a new tab" button on the tabs bar, i just like tabs on there damnit.

Big disagree here. IE has it and it is very useful and you can quickly open a new tab.

You could already quickly open a new tab by double-clicking the empty part of the tab bar. The button is superfluous (much like the maximize button on windows).

Dead_Monkey said,
You could already quickly open a new tab by double-clicking the empty part of the tab bar. The button is superfluous (much like the maximize button on windows).

Maybe you can turn it off in about:config ??? maybe?

Dead_Monkey said,
You could already quickly open a new tab by double-clicking the empty part of the tab bar. The button is superfluous (much like the maximize button on windows).

Not when you have so many tabs open that the whole bar is full. Its annoying at that point because there's no where to click to open a new tab. So you have to ctrl+t it.

lunamonkey said,
Maybe you can turn it off in about:config ??? maybe?

I looked. Unless the option is named strangely no dice.

GreyWolfSC said,
I looked. Unless the option is named strangely no dice. :(

Doesn't mean it's not possible. There are (or certainly used to be) lots of hacks you could do by adding new entries to about:config. One that springs to mind is config.trim_on_minimize=true which used to be a godsend for FF1/Windows when it was leaking a lot of memory.

Even if there's not a config directive, you should be able to make it invisible by adding something to userChrome.css -- they've still got that, right? -- keep an eye on mozillazine.org forums, this is bound to be covered before long.

If you go here and download the beta version of Tab Mix Plus. You will find that you can switch off the button, on the tab bar page under Display.

Hope this helps, and yes it works for me.

mucter said,
Not when you have so many tabs open that the whole bar is full. Its annoying at that point because there's no where to click to open a new tab. So you have to ctrl+t it.

Exactly as I'm typing now.. 6 tabs open, no space to double click.

If anything, it's just as compelling an argument to say that getting rid of the new-tab button would just leave you with empty, wasted space. By taking advantage of otherwise empty real estate, and giving the user a single-click solution, they're actually being MORE efficient.

Minimalism is about intelligently using the space you have, not locking space out and saying NO NOT YOURS.

WOW it's faster, although I use a lot of software for development with FF, just waiting on updates which should not be long, some of the major one have already upgraded their software it's just a small amout of people whom have not updated their software yet. Symantec need to update their plug-in for 3.5 as it's incompatible.

With refernece to Norton IPS and Norton Toolbar I just found an article from Symantec that IPS and Toolbar are still in development although it does not state a release date.

supernova_00 said,
Shameful plug: I created an extension a while ago to easily and quickly toggle private browsing with a toolbar button called Toggle Private Browsing. It also gives a little more UI indication that you are actually in private browsing.


Thanks! Works great.

Nice A worthwhile shameful plug.

Actually, the plugin is adding some corruption on Fx 3.5 OSX. Corrupts the address bar graphic.

Septimus said,
Nice A worthwhile shameful plug.

Actually, the plugin is adding some corruption on Fx 3.5 OSX. Corrupts the address bar graphic. :(

Suprised no one has reported that before. Could you send me a link to a screenshot and with any errors shown in the tools -> error console?