JS Blocker
JS Blocker
5.3.2
3.5
0.0
JS Blocker free download for Mac

JS Blocker for Mac5.3.2

04 January 2021

Safari extension that controls which scripts run on websites.

What is JS Blocker for Mac

JS Blocker is a Safari extension that protects your privacy and keeps you safe on the web by blocking scripts and others from tracking you-similar to NoScript for Firefox.

Features
  • Quickly and easily block advertisers, tracking agencies, and social media networks from monitoring your online activity.
  • Prevent websites from figuring out where you came from.
  • Prevent all scripts on the webpage from being allowed to run.
  • Block frames, AJAX requests, embeds, objects, videos, and hide images.
  • Block many JavaScript annoyances such as alert dialogs getting in the way, forms not autocompleting, windows being resized, and more.
  • Inject user scripts into webpages for even greater control with full Greasemonkey API support.

What's new in JS Blocker

Version 5.3.2:

Note: Does not work in Safari 12.0 and later.

  • Disabled new user registration for JSB Sync. Existing users can continue to log in normally.
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0.0
(0 Reviews of )
There are no reviews yet
desrn68
desrn68
Feb 1 2020
5.3.1
2.0
Feb 1 2020
2.0
Version: 5.3.1
Doesn't work with safari. May be good for other browsers though.
Derekcurrie
Derekcurrie
Sep 19 2018
5.3.1
5.0
Sep 19 2018
5.0
Version: 5.3.1
DISCONTINUED. Safari 12.0 radically changed its extension system. Apple's goal was to increase Safari security. Unfortunately, not all of Apple's choices in blocked extensions made sense. JS Blocker is IMHO the most unfortunate casualty. It no longer works with Safari and will not be updated to fit into Apple's requirements. JS Blocker was brilliant, incredibly useful and relatively easy to use. I will miss it. If Apple does in the future allow for extensions like JS Blocker, I will be very grateful. I wrote to Travis Roman, the developer. Here is his reply: "Apple has dropped support for what they deem "legacy extensions". JSB will never work again going forward unless Apple reverses this decision. Sorry about this, but there's nothing I can do...." BTW: If Safari give you a popup warning saying "Safari can't install this extension. An error occurred while installing the extension "JS Blocker 5".", what's going on is Safari attempting to inexplicably install the remaining version of JS Blocker in the now legacy Safari extensions Gallery. Apparently, Apple hasn't yet cleaned out its Gallery of blocked extensions. The old Gallery is being deprecated in favor of the a App Store equivalent anyway. To stop this inexplicable popup warning, uninstall JS Blocker from your extensions.
markbyrn
markbyrn
Apr 12 2018
5.3.0
5.0
Apr 12 2018
5.0
Version: 5.3.0
Was the only Safari plugin that passed the Cryptojacking test site.
theo-langstrumpf
theo-langstrumpf
Feb 22 2018
5.3.0
1.0
Feb 22 2018
1.0
Version: 5.3.0
I tried this blocker Not very good
droscar
droscar
Dec 13 2017
5.2.1
0.0
Dec 13 2017
0.0
Version: 5.2.1
Version 5.2.2 has been available at the developer's site for some time now. I've also had trouble updating JS Blocker. The solution that works for me is to uninstall it from Safari/Preferences/Extensions and then double-click on the newer .safarextz file. I just did this five minutes ago and it worked. I'm using Safari 10.1.1 in El Capitan. Also, JS Blocker is donation-ware. There is no fixed price but major features are disabled until you make a donation.
Dorkypants
Dorkypants
May 18 2017
5.2.0
0.0
May 18 2017
0.0
Version: 5.2.0
Can't install in Safari 10.1.1. Moving it into Safari's Extensions folder and starting Safari brings up a confirmation dialog for installing JSB 5.2.0, but it still doesn't install. Had to downgrade to 5.1.7 from Apple's Extensions Gallery
triceqnt
triceqnt
Jan 28 2017
5.1.6
0.5
Jan 28 2017
0.5
Version: 5.1.6
As Fyrejlye wrote already: Last installable Version was 5.1.4 There is NO WAY (and I tried ALL) to install the newer Versions. It's a pitty! I'm on OS X 10.12.3 and Safari 10.0.3 (12602.4.8) I rate my current Version 5.1.4 with 4,5 Stars
Fyreflye
Fyreflye
Jan 13 2017
5.1.6
0.0
Jan 13 2017
0.0
Version: 5.1.6
"Safari can’t install this extension. An error occurred, etc"
Also, no way to install it on Safari TP. Works only on Safari when you can install it.
Derekcurrie
Derekcurrie
Dec 8 2016
5.1.5
5.0
Dec 8 2016
5.0
Version: 5.1.5
I've found it impossible to install v5.1.5. I have v5.1.4 running successfully. But I've tried every which way to install v5.1.5 and Safari ALWAYS throws this error: "Safari can't install this extension An error occurred while installing the extension "JS Blocker 5". I'm using Safari v10.0.2 on macOS 10.12.2 Beta (16C53a) I've attempted to capture exactly what error is being thrown in the Console, so far without success.
Big Johnson
Big Johnson
Oct 28 2016
5.1.4
0.0
Oct 28 2016
0.0
Version: 5.1.4
No longer works for me in Safari 10.0 on OS X 10.11+.
Last working version was 5.1.1.
Latest version in Apple's Extension Gallery is 5.1.2.

I just spent an hour removing and installing multiple times. I thoroughly removed the extension and all traces in the Safari LocalStorage folder.
No matter what webpage I go to, the extension says "Did not receive a page from the active tab."
Well Ghostery did!

Developer rarely responds to emails - I only received one reply for NINE emails sent.

The Import function doesn't work so you can't save your settings.
Well, you can EXPORT them, but you can't IMPORT them.
kWASj
kWASj
Aug 22 2016
5.1.2
4.5
Aug 22 2016
4.5
Version: 5.1.2
Good plug in.
B-Jefferson-Le-Blanc
B-Jefferson-Le-Blanc
Apr 12 2016
5.0.20.1
0.5
Apr 12 2016
0.5
Version: 5.0.20.1
This version (5.0.20.1) apparently fixes the Safari crashing bug in version 5.0.19. I'll keep my fingers crossed that it holds up. Except that it prevented the Post Review button on this page from working. So it's still problematical.
anonymous-gerbil-5319
anonymous-gerbil-5319
Apr 11 2016
5.0.20.1
0.0
Apr 11 2016
0.0
Version: 5.0.20.1
What is the next step? An HTML-blocker ?
B-Jefferson-Le-Blanc
B-Jefferson-Le-Blanc
Apr 7 2016
5.0.19
0.5
Apr 7 2016
0.5
Version: 5.0.19
This version of JS Blocker (5.0.19) is a total disaster. It chokes Safari every time I try to install it. Because of that you cannot use Safari to uninstall it. The installer places files in two locations: There is a JS Blocker folder in ~/Library/Caches/com.apple.Safari/Extensions called JS Blocker 5.safariextension. Delete it. The JS Blocker 5.safariextension file is in ~/Library/Safari/Extensions. Delete it too and empty the trash. Then Safari should run properly again. By the way, I found these items easily using Find Any File. It's much easier to use than Spotlight and locates files Spotlight doesn't catalog, like hidden and system files. If you haven’t updated JS Blocker yet, don’t do it! And turn off Install updates automatically in the Updates section of the Safari Extensions preferences, if it’s currently on. Automatic updates may sound convenient, but with them turned on you will have a harder time figuring out what’s wrong with Safari when a problem like this occurs. The previous version of JS Blocker gave me problems, too, but reinstalling it solved them then. Now it’s a total bust. Don’t know what’s going on with the developer but it seems he’s now making malware. Grrrh! Even one beta tester should have found this problem before he released the update.
Cyann
Cyann
Apr 4 2016
5.0.19
0.0
Apr 4 2016
0.0
Version: 5.0.19
This new version (5.0.19) freeze my computer, increase the RAM, and finally delete itself.
B-Jefferson-Le-Blanc
B-Jefferson-Le-Blanc
Mar 16 2016
5.0.18
0.5
Mar 16 2016
0.5
Version: 5.0.18
This version of JS Blocker (5.0.18) broke Safari. With it active I can no longer access bank and credit card sites that worked just fine a few days ago. Not having a copy of the earlier version handy, I was obliged to uninstall it.
Lorin-Rivers
Lorin-Rivers
Mar 7 2016
5.0.17.1
5.0
Mar 7 2016
5.0
Version: 5.0.17.1
Works when adblocker doesn't
Michele-D-
Michele-D-
Feb 16 2016
5.0.15.1
4.0
Feb 16 2016
4.0
Version: 5.0.15.1
It is good but it is waay too complicated. It would be great if it had a simple mode in the UI where one can just whitelist/blacklist the sites. I get only few sites with pop ups, I'd just like to black list them allowing all the rest. Even better with a confirmation dialogue box when an unlisted site tries to open a pop up.
marcus27
marcus27
Jan 2 2016
5.0.15
5.0
Jan 2 2016
5.0
Version: 5.0.15
Excellent plug-in
George-Baron
George-Baron
Nov 23 2015
5.0.14
3.5
Nov 23 2015
3.5
Version: 5.0.14
Can't update. All I get is "An error occurred while installing the extension “JS Blocker 5”.
Raven-
Raven-
Oct 3 2015
5.0.11
4.0
Oct 3 2015
4.0
Version: 5.0.11
Hmmmm, does not work here, after upgrading safari and Js blocker itself.......???? Safari Version 9.0 (10601.1.56.2) JS Blocker 5.0.10 --> JS Blocker 5.0.11 Does not work anymore? Help!
baxsur
baxsur
Sep 29 2015
5.0.11
4.0
Sep 29 2015
4.0
Version: 5.0.11
Great!
Hkim
Hkim
Jul 15 2015
5.0.7
1.5
Jul 15 2015
1.5
Version: 5.0.7
I am still finding this software to be a problem; sites load much slower, many times "fingerprint" warnings keep popping up on sites over and over. Frankly this software has become a liability.
LeMerlot
LeMerlot
Jul 6 2015
5.0.6
5.0
Jul 6 2015
5.0
Version: 5.0.6
I use it since months and wouldn't live without it anymore. Many thanks to the developer!
Raven-
Raven-
Jun 21 2015
5
4.0
Jun 21 2015
4.0
Version: 5
Still works fine and does what it says!
Hkim
Hkim
Apr 17 2015
5
1.5
Apr 17 2015
1.5
Version: 5
This has a confusing and cluttered GUI despite the fact it offers much control over filtering. It works well enough in the 7.1.5 build of Safari but, some sites with lots of flash (youtube) will not load flash at all. Between the constant tweaking that youtube does to its content and the complexity of this software, it is a challenge to figure out how to best use it. This could use some improvement and thought.
wickedsp1d3r
wickedsp1d3r
Jan 31 2015
4.1.21
5.0
Jan 31 2015
5.0
Version: 4.1.21
Unfortunately, the latest version is a big mess. Overall it has become too complicated lately.
Programhappy
Programhappy
Jan 15 2015
4.1.19
1.0
Jan 15 2015
1.0
Version: 4.1.19
I agree with Derekcurrie. It's absolutely terrible! It completely disables Safari 7.1 on OS X 10.9.5. The "beach ball of death" appears within seconds after opening Safari. My lengthy, painstaking process of elimination left zero doubt that the cause is "JavaScript Blocker". As soon as I uninstall it, the problem is gone. As soon as I reinstall it, the problem returns. Needless to say, "JavaScript Blocker" is permanently in the trash.
Derekcurrie
Derekcurrie
Jan 6 2015
5 (150105)
5.0
Jan 6 2015
5.0
Version: 5 (150105)
Error. Apologies!
Derekcurrie
Derekcurrie
Jan 6 2015
5 (150105)
5.0
Jan 6 2015
5.0
Version: 5 (150105)
Much as I appreciate JavaScript Blocker, I'm concerned that the past couple version 4 updates have locked up Safari into permanent, bad old Sit & Spin mode. That means I lose whatever work I may be doing inside Safari for the sake of whatever problem is going on with JavaScript Blocker when it updates. IOW: What's really the alpha version here? Very disappointing. From what I can tell, this lockup starts when JavaScript drops down its message box and attempts to provide a message to users. Instead, a blank white box results along with Sit & Spin. Otherwise, when it's working, this is a very valuable tool.
MisterE
MisterE
Nov 16 2014
4.1.17
0.0
Nov 16 2014
0.0
Version: 4.1.17
Note this info from JSB Developer Travis Roman: "You can use all features for 10 days after that you need to click the "Unlock" button and either donate or click the "Unlock without contributing" button, the donation can be 0.01 USD+. Curious George's comment is 2 years old, the program has always had the option to donate or not to gain full access to all features, donating has never been required to have full access to everything JavaScript Blocker can do and it never will be."
Curious-George
Curious-George
Oct 24 2014
4.1.16c
3.5
Oct 24 2014
3.5
Version: 4.1.16c
Sorry but this IS NOT FREE ... after using for a while, clicking on the status icon in the toolbar yields the following text (and there is no longer any blocking): JavaScript Blocker Your free trial of JavaScript Blocker's extra features has expired. To see what what you'll be missing out on, browse around the settings page. You can make a contribution and have it verified to continue using those features.
Markoh
Markoh
Jun 24 2014
4.1.15
0.5
Jun 24 2014
0.5
Version: 4.1.15
GlimmerBlocker!
AlexS2255
AlexS2255
Mar 30 2014
4.1.7
5.0
Mar 30 2014
5.0
Version: 4.1.7
If only this were a proxy server instead of plugin ... sigh
Raven-
Raven-
Feb 1 2014
4.1.4
4.0
Feb 1 2014
4.0
Version: 4.1.4
Very good app.
Kernos
Kernos
Jan 14 2014
4.1.2
5.0
Jan 14 2014
5.0
Version: 4.1.2
I agree with Fishscale. This is an extremely useful extension providing the user with control over what a webpage is allowed to do. I think the negative reviews come from those not willing to spend the time necessary to learn how the program works and the time it takes to modify domains/subdomains frequently visited to get them working as desired. It is not a turnkey extension nor could it ever be. An example would be getting Twitter and Facebook button links to work on a variety of sites. It takes an effort most are not willing to make—sort of like asking casual users to learn regular expressions. To this end Travis Roman (the author) has made it not really necessary to learn regex; the program writes the rules for you 99+% of the time. Kudos to Travis.
Fishscale
Fishscale
Dec 31 2013
4.1.2
5.0
Dec 31 2013
5.0
Version: 4.1.2
Hmm, i am not sure where all of these negative reviews come from but one thing is clear to me after reading a few of these 1 start reviews/complaints. User kill_gore's complaints and another user echoed a similar statement in regards to not being able to comment on blogs and someone even said the GUI was not user friendly... This is an extension that is extremely powerful if utilized correctly and that would of course entail reading the documentation provided by the author along with asking other users and the very responsive and generous developer who has made this open source. I am sorry but if you can't comment on a blog look into which scripts are being blocked and allow the appropriate script to run, at the same time you can make the rule temporary or persistent/permanent along with a slew of other options. The GUI is beautiful so to say it is not user friendly please provide us with a more intuitive layout as I think this setup is easy to read and interpret at a glance even though it provides a complete "picture" as to what the JSB extension is doing, script by script. Read the documentation, donate or use all advanced features with the built-in generously provided way of activating for free. Read the documentation... I can't say it enough, all your questions will be answered and statements of false advertising this as freeware will again be answered. It's a shame that people will see the bad star rating from people who failed to learn the extension before writing negative reviews and if you can't uninstall an extension, which is always by clicking the uninstall button in the settings pane for that extension in safari preferences extensions tab. Never heard of a partial uninstall of an extension Kill_gore, why do you need TOTAL when the built-in process provided by apple deletes the extension which is self-contained to begin with? Sorry for my rant, but I hate reading negative reviews and ratings for a superb and responsive developer who has put in countless hours perfecting the extension so asks if you would but does not force anyone to donate. Donate .10$ if you really wan to be cheap, or nothing, just don't expect the developer to continue keeping this extension up to date when they can get paid to use their skills providing a client with a product they appreciate instead of complaining users with a free extension that they obviously do not appreciate. Sorry again for the rant. ALL 5/5/5/5 ClickToPlugin, Vimari, Sessions, JavaScript Blocker
Kill-gore
Kill-gore
Dec 5 2013
4.0.9.2
1.0
Dec 5 2013
1.0
Version: 4.0.9.2
Would some one be so kind as to link the TOTAL uninstall instructions for this add-on.. even disabled i still am having problems with Shared links and some webpages went from almost instantaneous load to not even loading.. any help appreciated.
Kill-gore
Kill-gore
Dec 5 2013
4.0.9.2
1.0
Dec 5 2013
1.0
Version: 4.0.9.2
once installed you can't do a frgn thing.... REMOVING IT ASAP... The idea is good but it is not user friendly and the info on how to use is poorly written.. scripts that block every thing on a page ??? really. 5 minutes writing a comments on youtube or Facebook only to have it block it... wtf. fix it!!
sfaggam
sfaggam
Oct 3 2013
4.0.2
0.5
Oct 3 2013
0.5
Version: 4.0.2
Shareware falsely advertised as freeware; small subset of Noscript essential functionality advertised as equivalent of that marvelous software.
George-Baron
George-Baron
Sep 29 2013
4.0.2
3.5
Sep 29 2013
3.5
Version: 4.0.2
JavaScript Blocker 4.0.2 was working fine on my iMac, OS 10.6.8. Safari 5.1.10 until a few days ago when I hit the settings on JS Blocker and got the following item: "You have to allow scripts from the host com.toggleable.javascriptBlocker-6S8J5HV3H4 in order for the setting page to function." Essentially it does nothing now. Help. It also does this with all the other extensions off.
B-Jefferson-Le-Blanc
B-Jefferson-Le-Blanc
Aug 31 2013
4.0.2
0.5
Aug 31 2013
0.5
Version: 4.0.2
It should be noted that JavaScript Blocker blocks the ability to post comments on some blogs. I don't know enough about how the blogging function works to tune for this, so I had to disable the extension. Unfortunately this is not the only security extension that has this effect. I've found that Ghostery does as well. Don'tTrackMe and ClickToFlash do no have this "feature."
Cowicide
Cowicide
Aug 27 2013
4.0.1
4.5
Aug 27 2013
4.5
Version: 4.0.1
If you're not using this with Safari, you're stupid.
reves
reves
Jul 13 2013
3.3.1
5.0
Jul 13 2013
5.0
Version: 3.3.1
Excellent plugin that does the job perfectly. A must.
Tubo
Tubo
Aug 9 2012
2.8.0
5.0
Aug 9 2012
5.0
Version: 2.8.0
Long waited for...
Mcjf
Mcjf
Aug 8 2012
2.8.0
3.5
Aug 8 2012
3.5
Version: 2.8.0
This extension is certainly a welcome addition to Safari's extension gallery. I've been wondering for a long time when a some extension similar to NoScript would pop up. It is easy to use, has nice features, and not expensive if you want to unlock all features. BUT please make no mistake: using this extension makes your internet experience safer but it is no way nearly as safe as using NoScript with Firefox. As some comments/reviews here suggest, this difference is obvious for normal users. The developper knows this, of course. On the bottom of his web site you can read this notice: 'This tool only blocks scripts when they are loaded from an external file or a data URI. What this means is that any scripts that are within the page itself can still run. Unfortunately this is a limitation of the Safari extension design, not mine.' That said, it's still quite good for what it does. Just don't kid yourself and think you're NoScript-safe now using this.
Derekcurrie
Derekcurrie
Jul 6 2012
2.7.0
5.0
Jul 6 2012
5.0
Version: 2.7.0
This is an excellent free Safari extension. I highly recommend it. Consider it equivalent in most ways to the NoScript add-on for Firefox and Chromium. (I don't use Chrome). Note that software of this kind requires a period of learning and adjustment. As such, it is mostly geek level software. But if you are serious about security on the Internet, this add-on is essential. Other security add-ons and apps I recommend: -Ghostery - WOT (Web of Trust) - Do Not Track Plus - Cookies app, which is the paid upgrade from the free Safari Cookies extension.
wickedsp1d3r
wickedsp1d3r
Jul 6 2012
2.7.0
5.0
Jul 6 2012
5.0
Version: 2.7.0
This has become one of the essential plugins in my Safari. Fantastic plugin!
Velgor242
Velgor242
Jul 5 2012
2.7.0
5.0
Jul 5 2012
5.0
Version: 2.7.0
I agree with kjnw below, this is a 5-star extension. Vastly superior to NoScript and the developer is extremely responsive. Definitely worth a small donation.
kjnw
kjnw
Jul 4 2012
2.6.1a
5.0
Jul 4 2012
5.0
Version: 2.6.1a
One star! I beg your pardon, but are you people mad?! This is one of the best extensions available for Safari, much better than NoScript on Firefox. Does not break any sites by default blocking, just works phenomenal. With ClickToPlugin this extension should be pre-installed by Apple. Five stars, no discussion.
Stormchild
Stormchild
Jun 5 2012
2.5.0
1.0
Jun 5 2012
1.0
Version: 2.5.0
First of all, this is not "free". It has "donator-only features", and it also displays a time limit for a "free trial" — whether that applies to donator-only features or the entire add-on is unclear. In fact, everything about this is unclear. A hundred obscure settings are sloppily scattered all over the place. (Note to the developer: Xcode automatically lines up things like checkboxes for you, so they appear in an orderly vertical line that's easy to scan.) Uninstalled immediately. Steer clear of this one.
Frankof
Frankof
May 26 2012
2.5.0
1.0
May 26 2012
1.0
Version: 2.5.0
You come that MU wrongly lists this as "free", when the author explicitly states that it is a demo version with "donator-only" features? Asking for a donation is one thing, making a payment mandatory to fully use a program is another. It is a respectable valid business model to sell a program, but then the price is not a "donation", and the program is certainly not free.
Free
3.5
0.0
App requirements: 
  • Intel 64
  • Intel 32
  • Mac OS X 10.7.5 or later
License: 
FreeAbsolutely Free

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