Rated 5 out of 5 stars

Please add mobile version add-on!

Rated 5 out of 5 stars


Very good, just still unstable Rated 4 out of 5 stars

I experienced uMatrix losing configuration, so I had to recreate my rules from scratch

Garbozilla Firechrome 55.0.3 64 Rated 5 out of 5 stars

Would be awesome if 1.1.0 would work with 55 cause 56 slurps on a big fat dildo

IF you get on a page with alot of domains scroll down the list will just automatically keep scrolling up making impossible to set up the ones that are down ,even with the hybrid dev 1.0.1 webex builds...well damn , gonna see what happens when 57 is released ...

Just hattin' on mozilla nothing to see here, scroll and read other reviews xD

This user has a previous review of this add-on.

In case you've lost your user settings... Rated 5 out of 5 stars

Install version 1.0.0 of uMatrix:

Open the uMatrix Dashboard, all your settings and rules should be there. Now export these settings to a file, update to the latest Version of uMatrix and import the settings from the file you've just saved. Enjoy!

uMatrix is a great addon and I'm glad that the devs put in the effort to switch to web extensions. Your work is highly appreciated :)

Latest Update does not Block Requests/Connections of other Addons. Rated 3 out of 5 stars


with the latest update of umatrix, it can not block requests/connections of other addons or firefox itself (behind the scene).
it does not even list the requests/connections in the log.

for example

before the update of umatrix:
while updating the filterlists of uBlock Origin i could see in the umatrix logger that the requests were blocked.
and only after i allowed them in umatrix, the filterlists could be updated.

after the update of umatrix:
uBlock Origin can update the filterlists without being blocked and there are even no logs of the connections in the umatrix logger.

is this a bug or one of the new restrictions of being a webextension?

the ability of umatrix to block such requests/connections was the most important feature why i used it.
so it becomes nearly useless for me.

This user has a previous review of this add-on.

This is great tool but Rated 1 out of 5 stars

gets * for silently destroying all user settings including cloud :(

I know that you don't... Rated 5 out of 5 stars

First of all: people, read the bloody info!
Although you think you get it, although you think you can handle it...
Gorhil is pretty clear (and correct) about it:

As for the coding/ addon: been using it for a while now, and it is perfect! Yes, it breaks stuff sometimes. But then again, that's why you installed it for in the 1st place, right?
Confused? Don't get that last statement?
OK, if you can't figure that out, return to ***
Don't say they didn't warn you. ☺

BTW, if you DO know what this is all about, uMatrix works brilliantly with Gorhills (now new) uBO-Scope, because it shows you what those cryptic URLs actually do. So you can block them, if you want. You know, break stuff... Works for me!

Gorhill: I know you don't take feature requests, but concerning uMatrix... If you come over the code (you know, because you're there any way) which defines the name of the backup (settings/ rules) file... Can you please make it add the current date and time, just like with the backup files for uBO? Would be immensely helpful. Enables to keep a small backlog of previous configurations without renaming the files. I know, nothing xdotool on my box can't automate, but still... Cheers...

Update could have been better managed Rated 5 out of 5 stars

Brilliant that this is now photon-compatible, thanks.

However, it seems to have lost my previous uMatrix profiles, so several sites refused to render or to work properly (including addons.moz comments!) until I updated them. Ouch.

That's a bit careless, with no notification. But I sort of understand, and it's a little unfair to criticise after all the work Raymond has done. I blame moz more for the dog's breakfast approach.

Very puzzling until I worked it out. And I had been complaining about Nightly developers, too, releasing a version that didn't render properly, when it was the unannounced uMatrix update that did it.

Great addon Rated 5 out of 5 stars

Is an update for FF 57 planned ?
I can't wait :)

Thanks for your work

edit : wow, on the day of my comment !

This review is for a previous version of the add-on (1.0.0). 

Permission window not fully visible in Firefox 56 Rated 4 out of 5 stars

Been using UMatrix for a while now. But its permission window is broken on Firefox 56 (for Mac). There is no way to either scroll to see additional fields or to resize window. So it's becoming unusable while visiting new sites. Please try and fix it.

This review is for a previous version of the add-on (1.0.0). 

Firefox 56 incompatibility Rated 2 out of 5 stars

The permission matrix is not fully visible. Tried having uMatrix button in the toolbar and in the menu. But the matrix remained partially occluded.

This review is for a previous version of the add-on (1.0.0).  This user has a previous review of this add-on.

Is there a way to donate? Rated 5 out of 5 stars

This is such an excellent security addon, and easy to use (I fancy myself somewhat of an advanced user).

Is there a way to donate to incentivize continuing development for uMatrix?

This review is for a previous version of the add-on (1.0.0). 

Excellent Rated 5 out of 5 stars

Provides a great way to see what sorts of resources are being used by what sites. Nice fine-grained control, especially since it shows "dubious" sites in red. It may never be easy to map the functionality you want to the necessary resources, but this extension does a good job. (I used to use NoScript.)

This review is for a previous version of the add-on (1.0.0). 

Released version now unusable in FF 56 - 1.0.1rc3 beta works Rated 5 out of 5 stars

uMatrix 1.0.0 (released version, not beta version)
Firefox x64 56.0
Windows 7 x64 Home Edition

Was using this extension in 55, and earlier versions, of Firefox. Problem now is the table width is too narrow and there is no way to resize it. Cannot drag its window edges and there are no scrollbars. This means I cannot get to the Script column to allow some or all scripts on a page where blocking them all makes the page unusable.

Might be a bug in FF 56; however, this extension displays a table where columns are the type of objects to allow or block and each row is a domain for the object types.

There is a vertical scrollbar. That lets you scroll the table so you can see domains farther down the list when a page has lots of resources. There is no horizontal scrollbar so you can get over to the truncated columns on the right side of the table.

There is the beta version of this add-on but that has scrolling defects. If the number of rows in the table exceeds the fixed maximum height of the window, you cannot focus on or change settings for domains at the end of the table. You can scroll down to see them but clicking anywhere on the table results in the table snapping back to its 1st row position. See my prior review of the beta version at https://addons.mozilla.org/en-US/firefox/addon/umatrix/reviews/917375/.

I cannot use the released version because columns are now hidden on the right side. I can see the cookie, css, image, and partially the media columns but the rest are hidden and I cannot get to them, so I cannot allow scripts whether temporarily or permanently. The page remains unusable. I cannot use the beta version because any touching of cells in the table beyond the window height results in snapping the table position back up to the top.

I really hate giving up this extension but it has become unusable in FF 56 for the released version and I note the problem in scrolling and snapping back in the beta version. Cannot use the released version as of FF 56. Cannot use the beta version. Cannot use uMatrix anymore.

I will have to uninstall the released version (1.0.0). I'll try the currently latest beta (1.0.1rc3) to see if the scroll-snapToTop defect is gone; however, its release notes don't say anything about fixing table positioning. I'll report back after testing the latest beta.


Good news (for me). The 1.0.1rc3 beta fixed the problem with trying to click on a row beyond the window height for uMatrix's table that had snapped vertical scrollbar for the table back up to the top, or Firefox 56 fixed the problem (from when I tested uMatrix 1.0.1rc1 with Firefox 55). I tested with a visit to cnn.com. The uMatrix table would show the first 20 entries with the remaining 34 requiring to scroll down. Before when I just hovered the mouse over the table had it snap back to the top of the scroll position. Now the table stays where it is currently scrolled so I can hover the mouse over the table without it repositioning which also means I can make changes to allow/block some or all sources.

Luckily I copied the My Rules list (into a file) so I could paste them back in with the WE version of this add-on. Going from legacy to WE version results in losing all settings, and I didn't want to bother going the legacy-to-hybrid/WE-to-WE route of upgrading this add-on to carry forward my old settings.

I still think this add-on should add a horizontal scrollbar should its table be too wide for the popup window showing the table just in case the viewing size gets screwed again in a later version of Firefox or uMatrix.

So my rating went from lowest (1) back up to highest (5). Hope it keeps working and its popup GUI remains usable.

This review is for a previous version of the add-on (1.0.0).  This user has a previous review of this add-on.

Simply Awesome Rated 5 out of 5 stars

I so wish I'd found this addon long ago. It replaces two addons (Cookie Monster and NoScript -- both allow temp/perm blocking) with an easier-to-use interface.

Using this on Nightly 58 atm and it's magnificent.

This review is for a previous version of the add-on (1.0.0). 

Rated 5 out of 5 stars

Very useful for filtering out unwanted content.

This review is for a previous version of the add-on (1.0.0). 

UI Rated 4 out of 5 stars

Popup menu is broken.

This review is for a previous version of the add-on (1.0.0). 

Great! Rated 5 out of 5 stars

This is a great extension for advanced users. Blocks unneeded network calls to 3rd party addresses easily. Not so intrusive as NoScript and way easier to handle. Together with uBlock origin it's a perfect match!

BTW: Firefox 57 user can download the extension from the beta channel here: https://addons.mozilla.org/en-US/firefox/addon/umatrix/versions/beta?page=1#version-1.0.1rc2

This review is for a previous version of the add-on (1.0.0). 

nice blocker Rated 5 out of 5 stars

Performance, protection and Usability of the best browser firewall!

This review is for a previous version of the add-on (1.0.0).