- Uses JägerMonkey, a new, faster JavaScript engine
- WebGL is enabled by default on Windows and Mac OS X. WebGL support requires an OpenGL-capable graphics card. Support for other graphics cards on Windows (specifically Intel GPUs) and Linux will be coming in a future beta
- Certain rendering operations are now hardware-accelerated using Direct3D 9 on Windows XP, Direct3D 10 on Windows Vista and 7, and OpenGL on Mac OS X
- Improved web typography using OpenType with support for ligatures, kerning and font variants
- HTML5 Forms API makes web based forms easier to implement and validate
- See the complete changelist from the previous beta
As well as these features from previous Firefox 4 Betas:
Regarding Firefox 4.0 Beta 4 (Suggestions) Name: Nathan H. Email: hurdotnathanatgmaildotcom Product: Firefox Summary: Regarding Firefox 4.0 Beta 4 (Suggestions) Comments: Just some small suggestions I believe would help Firefox and the (present) slight majority of negativity from the User Studies: Create an easier menu. Firefox options, preferences and settings. The Options/Preferences panels give you access to Firefox settings. This article describes what types of settings are available in each panel. Mar 26, 2021 Firefox.exe, FirefoxPortable.exe, crashreporter.exe, Mozila firefox 4.0.exe and mozfire.exe are the most frequent filenames for this program's installer. '.htm', '.xml' and '.gif' are the extensions this free PC software can open. The software belongs to Internet & Network Tools. In Firefox for Windows, go to Menu → Options → Advance → Network → Settings, or skip this process and use BlackBelt as described above. In Firefox for Mac OS X, go to Firefox → Preferences → Advanced → Network → Settings. In Firefox for Linux, go to Edit → Preferences → Advanced → Proxies. Firefox will need to patch the new Firefox Quantum to allow this option to work. Actually it did work for me with Firefox 58.0 Quantum 'ARREB #answer-1056039 said' There option to limit one process does not work with the new Firefox Quantum so you will have to use and older version of Firefox and then it may actually work.
- Firefox 4 Beta is available in 57 languages
- Support for the new proposed Audio Data API
- Direct2D Hardware Acceleration is now on by default for Windows 7 users
- Firefox button has a new look for Windows Vista and Windows 7 users
- Support for HSTS security protocol allowing sites to insist that they only be loaded over SSL
- Firefox Sync is now included by default
- A new feature gives users a visual overview of all open tabs, allowing them to be sorted and grouped
- An experimental API is included to provide more efficient Javascript animations
- Firefox now supports the HTML5 video 'buffered' property
- Tabs are now on top by default on Windows, Mac OS X, and Linux
- You can turn any tab into an 'App Tab' by right-clicking on it and selecting 'Make into App Tab' from the context menu
- Web developers can animate content using CSS Transitions
- Responsiveness and scrolling improvements from the new retained layers layout system
- JavaScript speed improvements due to engine optimizations
- Changes to how XPCOM components are registered in order to help startup time and process separation
- You can search for and switch to already open tabs in the Smart Location Bar
- New Addons Manager and extension management API (UI will be changed before final release)
- Significant API improvements are available for JS-ctypes, a foreign function interface for extensions
- The stop and reload buttons have been merged into a single button on Windows, Mac OS X, and Linux
- The Bookmarks Toolbar has been replaced with a Bookmarks Button by default (you can switch it back if you'd like)
- Crash protection for Windows, Linux, and Mac OS X when there is a crash in the Adobe Flash, Apple Quicktime or Microsoft Silverlight plugins
- CSS Transitions are partially supported
- Full WebGL support is included but disabled by default at this time
- Core Animation rendering model for plugins on Mac OS X. Plugins which also support this rendering model can now draw faster and more efficiently
- Native support for the HD HTML5 WebM video format
- Web developers can use Websockets for a low complexity, low latency, bidirectional communications API
- Web developers can update the URL field without reloading the page using HTML History APIs
- More responsive page rendering using lazy frame construction
- Link history lookup is done asynchronously to provide better responsiveness during pageload
- CSS :visited selectors have been changed to block websites from being able to check a user's browsing history
- New HTML5 parser
- Support for more HTML5 form controls
- Web authors can now get touch events from Firefox users on Windows 7 machines
- A new way of representing values in JavaScript that allows Firefox to execute heavy, numeric code (used for things like graphics and animations) more efficiently
Developers can find out about all the changes and new features at the Mozilla Developer Center.
Firefox 4.0
<h2>Windows</h2>
<h6>Operating Systems</h6>
- Windows 2000
- Windows XP
- Windows Server 2003
- Windows Vista
- Windows 7
Please note that while the 32-bit and 64-bit versions of Windows Vistaand Windows 7 can be used to run Firefox 4, only 32-bit builds of Firefox 4 aresupported at this time.
<h6>Recommended Hardware</h6>
- Pentium 4 or newer processor that supports SSE2
- 512MB of RAM
- 200MB of hard drive space
<h2>Mac</h2>
<h6>Operating Systems</h6>
- Mac OS X 10.5
- Mac OS X 10.6
<h6>Recommended Hardware</h6>
- Macintosh computer with an Intel x86 processor
- 512 MB of RAM
- 200 MB hard drive space
<h2>Linux</h2>
<h6>Software Requirements</h6>
Please note that Linux distributors may provide packagesfor your distribution which have different requirements.
Firefox 4 Download Free
- Firefox will not run at all without the following libraries or packages:
- GTK+ 2.10 or higher
- GLib 2.12 or higher
- Pango 1.14 or higher
- X.Org 1.0 or higher (1.7 or higher is recommended)
- libstdc++ 4.3 or higher
- For optimal functionality, we recommend the following libraries or packages:
- NetworkManager 0.7 or higher
- DBus 1.0 or higher
- HAL 0.5.8 or higher
- GNOME 2.16 or higher
Firefox 4.5