Download Firefox 17.0

Firefox 17.0

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By Mozilla Organization  (Open Source)
Latest Version
Firefox 33.0

# NEW
- First revision of the Social API and support for Facebook Messenger
- Click-to-play blocklisting implemented to prevent vulnerable plugin versions from running without the user's permission
# CHANGED
- Updated Awesome Bar experience with larger icons
- Mac OS X 10.5 is no longer supported
# DEVELOPER
- JavaScript Maps and Sets are now iterable
- SVG FillPaint and StrokePaint implemented
- Improvements that make the Web Console, Debugger and Developer Toolbar faster and easier to use
- New Markup panel in the Page Inspector allows easy editing of the DOM
# HTML5
- Sandbox attribute for iframes implemented, enabling increased security
# FIXED
- Over twenty performance improvements, including fixes around the New Tab page
- Pointer lock doesn't work in web apps
- Page scrolling on sites with fixed headers