The NoScript Firefox extension provides extra protection for Firefox, Seamonkey and other mozilla-based browsers: this free, open source add-on allows JavaScript, Java, Flash and other plugins to be executed only by trusted web sites of your choice (e.g. Your online bank). NoScript (or NoScript Security Suite) is a free software extension for Mozilla Firefox, SeaMonkey, other Mozilla-based web browsers and Google Chrome, created and maintained by Giorgio Maone, an Italian software developer and member of the Mozilla Security Group. Noscript Follow. Overview Repositories 36 Projects 0 Packages noscript Follow. Sergey Vlasov noscript. Block or report user Block or report noscript. Firefox addon to discard tabs JavaScript. 202 contributions in the last year Mar Apr. The HTML noscript element defines a section of HTML to be inserted if a script type on the page is unsupported or if scripting is currently turned off in the browser. Content categories Metadata content, flow content, phrasing content.
The HTML <noscript> element defines a section of HTML to be inserted if a script type on the page is unsupported or if scripting is currently turned off in the browser.
| Content categories | Metadata content, flow content, phrasing content. |
|---|---|
| Permitted content | When scripting is disabled and when it is a descendant of the <head> element: in any order, zero or more <link> elements, zero or more <style> elements, and zero or more <meta> elements.When scripting is disabled and when it isn't a descendant of the <head> element: any transparent content, but no <noscript> element must be among its descendants.Otherwise: flow content or phrasing content. |
| Tag omission | None, both the starting and ending tag are mandatory. |
| Permitted parents | Any element that accepts phrasing content, if there are no ancestor <noscript> element, or in a <head> element (but only for an HTML document), here again if there are no ancestor <noscript> element. |
| Implicit ARIA role | No corresponding role |
| Permitted ARIA roles | No role permitted |
| DOM interface | HTMLElement |
Attributes
This element only includes the global attributes.
Examples
Result with scripting enabled
Rocks!
Result with scripting disabled
Specifications
| Specification | Status | Comment |
|---|---|---|
| HTML Living Standard The definition of '<noscript>' in that specification. | Living Standard | |
| HTML5 The definition of '<noscript>' in that specification. | Recommendation | |
| HTML 4.01 Specification The definition of '<noscript>' in that specification. | Recommendation |
Browser compatibility
Noscript Firefox Download
BCD tables only load in the browser
Today, with the launch of Firefox 87, we are excited to introduce SmartBlock, a new intelligent tracker blocking mechanism for Firefox Private Browsing and Strict Mode. SmartBlock ensures that strong privacy protections in Firefox are accompanied by a great web browsing experience.
Privacy is hard
At Mozilla, we believe that privacy is a fundamental right and that everyone deserves to have their privacy protected while they browse the web. Since 2015, as part of the effort to provide a strong privacy option, Firefox has included the built-in Content Blocking feature that operates in Private Browsing windows and Strict Tracking Protection Mode. This feature automatically blocks third-party scripts, images, and other content from being loaded from cross-site tracking companies reported by Disconnect. By blocking these tracking components, Firefox Private Browsing windows prevent them from watching you as you browse.
In building these extra-strong privacy protections in Private Browsing windows and Strict Mode, we have been confronted with a fundamental problem: introducing a policy that outright blocks trackers on the web inevitably risks blocking components that are essential for some websites to function properly. This can result in images not appearing, features not working, poor performance, or even the entire page not loading at all.
New Feature: SmartBlock
To reduce this breakage, Firefox 87 is now introducing a new privacy feature we are calling SmartBlock. SmartBlock intelligently fixes up web pages that are broken by our tracking protections, without compromising user privacy.
SmartBlock does this by providing local stand-ins for blocked third-party tracking scripts. These stand-in scripts behave just enough like the original ones to make sure that the website works properly. They allow broken sites relying on the original scripts to load with their functionality intact.
The SmartBlock stand-ins are bundled with Firefox: no actual third-party content from the trackers are loaded at all, so there is no chance for them to track you this way. And, of course, the stand-ins themselves do not contain any code that would support tracking functionality.
In Firefox 87, SmartBlock will silently stand in for a number of common scripts classified as trackers on the Disconnect Tracking Protection List. Here’s an example of a performance improvement:
Noscript Firefox
An example of SmartBlock in action. Previously (left), the website tiny.cloud had poor loading performance in Private Browsing windows in Firefox because of an incompatibility with strong Tracking Protection. With SmartBlock (right), the website loads properly again, while you are still fully protected from trackers found on the page.
We believe the SmartBlock approach provides the best of both worlds: strong protection of your privacy with a great browsing experience as well.
These new protections in Firefox 87 are just the start! Stay tuned for more SmartBlock innovations in upcoming versions of Firefox.
The team
This work was carried out in a collaboration between the Firefox webcompat and anti-tracking teams, including Thomas Wisniewski, Paul Zühlcke and Dimi Lee with support from many Mozillians including Johann Hofmann, Rob Wu, Wennie Leung, Mikal Lewis, Tim Huang, Ethan Tseng, Selena Deckelmann, Prangya Basu, Arturo Marmol, Tanvi Vyas, Karl Dubost, Oana Arbuzov, Sergiu Logigan, Cipriani Ciocan, Mike Taylor, Arthur Edelstein, and Steven Englehardt.
Noscript Firefox Android
We also want to acknowledge the NoScript and uBlock Origin teams for helping to pioneer this approach.