CRX id
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Description from extension meta
Point & click to forbid/allow any class of requests made by your browser. Use it to block scripts, iframes, ads, facebook, etc.
Image from store
Description from store
uMatrix: A point-and-click matrix-based firewall, with many privacy-enhancing tools.
*For advanced users.*
CHANGE LOG: https://github.com/gorhill/uMatrix/releases
uMatrix put you in full control of where your browser is allowed to connect, what type of data it is allowed to download, and what it is allowed to execute. Nobody else decides for you: You choose. You are in full control of your privacy.
Out of the box, uMatrix works in relax block-all/allow-exceptionally mode, meaning web sites which require 3rd-party scripts are likely to be "broken". With two clicks, uMatrix can be set to work in allow-all/block-exceptionally mode, which generally will not break web sites. See https://github.com/gorhill/httpswitchboard/wiki/How-to-use-HTTP-Switchboard:-Two-opposing-views for more details on this topic.
* See ALL the remote connections, failed or attempted, depending on whether they were blocked or allowed (you decide).
* A single-click to whitelist/blacklist one or multiple classes of requests according to the destination and type of data (a blocked request will NEVER leave your browser).
* Efficient blacklisting: cookies won't leave your browser, JavaScript won't execute, plugins won't play, tracking pixels won't download, etc.
* You do not have to solely rely on just one particular curated blacklist (arguably with many missing entries) outside which nothing else can be blocked: You are in full control.
* Ease of use: uMatrix lets you easily whitelist/blacklist net requests which originate from within a web page according to a point-and-click matrix:
- domain names (left column)
* from very specific
* to very generic
- type of requests (top row)
* cookies
* CSS-related resources (stylesheets and web fonts)
* images
* plugins
* scripts
* XHR (requests made by scripts)
* frames
* others
You can blacklist/whitelist a single cell, an entire row, a group of rows, an entire column, or the whole matrix with just one click.
uMatrix's filtering engine uses precedence logic to evaluate what is blocked/allowed according to which cells are blacklisted/whitelisted. For example, this allows you to whitelist a whole page with one click, without having to repeatedly whitelist whatever new data appear on the page.
All rules are scoped. For example, you can block `facebook.com` and `facebook.net` everywhere except when visiting a page on `www.facebook.com`. This way Facebook won't be able to build a profile of your browsing habits.
The goal of this extension is to make the allowing or blocking of web sites, wholly or partly, as straightforward as possible, so as to encourage users to care about their privacy.
The extension comes with 3rd-party hosts files totaling over 62,000 distinct hostnames (lists can be selectively disabled/enabled according to your choice).
Ultimately, you can choose however you browse the net:
* Blacklist all by default, and whitelist as needed (default mode).
* Whitelist all by default, and blacklist as needed.
Either way, you still benefit from the preset blacklists so that at least you get basic protection from trackers, malware sites, etc. Or you can disable all of these preset blacklists.
Your choice.
Randomly assembled documentation: https://github.com/gorhill/uMatrix/wiki
=====
This extension is also useful to understand what the web page in your browser is doing, often without your knowledge. You have full ability to see and decide with whom a web page communicates, and to restrict these communications to specific classes of objects within the web page.
The number which appear in the extension icon correspond to the total number of distinct requests attempted (successfully or not depending on whether these were allowed or blocked) by the web page.
Simply click on the appropriate entry in the matrix in order to white-, black- or graylist a component. Graylisting means the blocked or allowed status will be inherited from another cell with higher precedence in the matrix.
Red square = effectively blacklisted, i.e. requests are prevented from reaching their intended destination:
* Dark red square: the domain name and/or type of request is specifically blacklisted.
* Faded red square: the blacklist status is inherited because the entry is graylisted.
Green square = effectively whitelisted, i.e. requests are allowed to reach their intended destination:
* Dark green square: the domain name and/or type of request is specifically whitelisted.
* Faded green square: the whitelist status is inherited because the entry is graylisted.
The top-left cell in the matrix, the "all" cell, represents the default global setting, which allows you to choose whether allowing or blocking everything is the default behavior. Some prefer to allow everything while blocking exceptionally. My personal preference is of course the reverse, blocking everything and allowing exceptionally.
This extension is also useful if you wish to speed up your browsing, by globally blocking all requests for images as an example.
=====
BUGS, ISSUES: https://github.com/gorhill/uMatrix/issues
SOURCE CODE: https://github.com/gorhill/uMatrix (GPLv3)
Latest reviews
- (2025-04-01) David S: Chromium is dead to me if they get rid of this.
- (2025-03-12) Rodney Hill: This is the best extension, hands down. Many thanks to all who have worked on it. I really wish it was still maintained....uMatrix has the perfect blend of a simple UI and powerful features to prevent tracking. It's something I'd be willing to pay for or donate to. It's that good.
- (2025-03-09) Nothingness: In anticipation of this change, I've switched to another browser. Not coming back to chrome.
- (2025-03-06) JW E: Chrome keeps trying to remove this from my browser, but doesn't understand how necessary it is to security. Chromium needs to add this as core functionality before ripping away extensions that improve security from browsers.
- (2025-03-03) Mario Leite: Writing this after Google just blocked this extension. So good it had to be blocked... shame on you Google.
- (2025-03-03) Antony Hutchison: Makes Chrome usable, both as a browser and as a development tool. I've switched to Firefox to keep this, and only keep Chrome around to access Google services (gmail etc) to try and keep Firefox clean of Google pollution.
- (2024-10-08) Alexy Rozman: We will miss this tool! Probably will migrate to another browser after MV3 will be enforced
- (2024-09-03) Mad Catter: Even though this addon is no longer actively developed, I still use & highly value it on all my browsers. It's a great shame that it will soon stop working. Alternative MV3 script blocker options are sadly lacking by comparison - spent hours looking yesterday & nothing comes close to the functionality of umatrix.
- (2024-08-22) Yotic C#: Best I've ever seen. Too bad it's hard to find on a search engine. Just a blazing fast for Selenium programming.
- (2024-06-28) Richie: Not user friendly, but powerful. You can direct very specifically what parts(javascript, xml, css, cookies, frames, media) of webpages are loaded and which aren't. It gives so much control in the hands of the user, whereas companies tend to stuff their pages chock full of stuff many people don't want. With umatrix YOU get to choose what they can load on your screen. Not actively developed for a long time now, but it's so basic that it will probably work without issues until chromium changes how webpages are loaded on a fundamental level.
- (2024-06-20) Kieron “KieSeyHow” Seymour-Howell: Quite simply the absolute best security addon for Chrome, or Edge. Nothing is better. A full in-browser firewall. I hope this addon is updated for the new v3 rulesets for Chromium browsers. This addon provides critical security enhancement for Chromium browsers.
- (2024-06-09) AK xyz: Good for monitoring, good for blocking especially when you may be looking at banking, etc. Thank you.
- (2024-05-20) Cuvtixo D (cuvtixo): It's great for advanced users, for the time being. The project is no longer being developed (since 2021) and the Github repository has been archived. It will probably, mostly, continue to work for years. Probably. Apparently you can get some support from uBlock github site, I have no knowledge on the details of this.
- (2023-12-17) L8 Very: Perfect
- (2023-08-28) J J: It's very good but it also creates web problems that block pages. It's not user friendly.
- (2023-08-28) J J: It's very good but it also creates web problems that block pages. It's not user friendly.
- (2023-08-08) Вадим Головко: Прекрасное расширение. Огромная благодарность создателям! Пойдет опытным пользователям. Работает лучше всех адблоков, юблоков и так далее. Поражает функциональность расширения и возможности гибкой настройки под каждый отдельный домен.
- (2023-07-31) Pro tric: Works fine. I use it most for stopping any malicious script. Har använt umatrix länge nu. Främst för att stoppa ev elaka script från 3-parts-siter som kan vara infekterade. Sen går det mindre processorkraft om webläsaren inte måste köra en massa script hela tiden.
- (2023-07-10) タメル: Twitchから配信者をクリックしても画面がぐるぐるとローディング状態で開かない
- (2023-03-11) Kurt Amesbury: WOW! For years I've had to tolerate all the GARBAGE Fox News loads on its web pages. With this extension, I was able to eliminate all the parts I DON'T want to see. So no more ads. A lot less images. Just the story and the comments. That's it! The extension is a little complex at first, but once you get the hang of it, it's VERY cool. (And like most people, I didn't read the documentation - so if it was "complex", it could be mostly my own fault!) One thing I'd recommend is a "quick start" example. Put up a sample web page and walk users through how to filter out different parts. But bottom line - this does EXACTLY what I was hoping it would do. +++++
- (2023-03-11) Kurt Amesbury: WOW! For years I've had to tolerate all the GARBAGE Fox News loads on its web pages. With this extension, I was able to eliminate all the parts I DON'T want to see. So no more ads. A lot less images. Just the story and the comments. That's it! The extension is a little complex at first, but once you get the hang of it, it's VERY cool. (And like most people, I didn't read the documentation - so if it was "complex", it could be mostly my own fault!) One thing I'd recommend is a "quick start" example. Put up a sample web page and walk users through how to filter out different parts. But bottom line - this does EXACTLY what I was hoping it would do. +++++
- (2023-01-14) Tony Kujawski: Humbly stating I provide super geek services, I red/blue team, audit and certify HIPAA/HITECH, PCI-DSS 3.2, and SOC II type2. I use three tracker/adblockers. Ublock origin, NoScript, and uMatrix. Ublock doesn't provide a clear interface for exactly what blocking is occurring in the background, while it does provide an interface to show you what sites were pinged, I frequently find I am required to disable it, before the functionality of a website works correctly. No Script is much more simple and fluid, I would recommend for the intermediate tech savvy, you can quickly trust a single tab, or you can "temp trust, always trust, or never trust" each website that the current one connects to such as ad servers and content delivery networks. If set the always temp trust the site you go to, and are willing to toggle a few permissions, you can lock in your choices and export/import/sync with browsers. Import and exports are not cross browser compatible, but are if using same framework (Chrome to MSEdge / EpicPrivacy / Adblock / (Opera / OperaGX are CHINESE OWNED) and Firefox to Firefox_Focus / Brave / TOR_Preconfigured / Waterfox). uMatrix has similar export features and is more fine grained and configurable per-site and domain. Offers ability to use the highest rate block list should you choose to, this is for the more technically savvy who seek fine grain control, all things considered, if you are only going to use one, this is the one I take the time to configure the way I like and it always puts the "ad site / bad sites blocked at the bottom. It also has a greater visibility into what is happening and a much greater fine grained control.
- (2023-01-14) Tony Kujawski: Humbly stating I provide super geek services, I red/blue team, audit and certify HIPAA/HITECH, PCI-DSS 3.2, and SOC II type2. I use three tracker/adblockers. Ublock origin, NoScript, and uMatrix. Ublock doesn't provide a clear interface for exactly what blocking is occurring in the background, while it does provide an interface to show you what sites were pinged, I frequently find I am required to disable it, before the functionality of a website works correctly. No Script is much more simple and fluid, I would recommend for the intermediate tech savvy, you can quickly trust a single tab, or you can "temp trust, always trust, or never trust" each website that the current one connects to such as ad servers and content delivery networks. If set the always temp trust the site you go to, and are willing to toggle a few permissions, you can lock in your choices and export/import/sync with browsers. Import and exports are not cross browser compatible, but are if using same framework (Chrome to MSEdge / EpicPrivacy / Adblock / (Opera / OperaGX are CHINESE OWNED) and Firefox to Firefox_Focus / Brave / TOR_Preconfigured / Waterfox). uMatrix has similar export features and is more fine grained and configurable per-site and domain. Offers ability to use the highest rate block list should you choose to, this is for the more technically savvy who seek fine grain control, all things considered, if you are only going to use one, this is the one I take the time to configure the way I like and it always puts the "ad site / bad sites blocked at the bottom. It also has a greater visibility into what is happening and a much greater fine grained control.
- (2022-12-31) Mark Khusidman: Learning curve is a bit steep, but it seems like amazing tool so far.
- (2022-12-31) Mark Khusidman: Learning curve is a bit steep, but it seems like amazing tool so far.
- (2022-12-19) Inner Universe: Тупо не грузит полстраницы любого нужного сайта. потоковое видео вообще невозможно смотреть - на месте окна с видео пустой прямоугольник. Бесполезная хня.
- (2022-11-04) COW KING (THE COW KING): 概念很棒，但是内置拦截规则不行。开了之后包括Youtube，gmail，哔哩哔哩，pornhub等绝大多数常用网站都无法正常使用。也没有黑名单模式，所以就只能关了吧
- (2022-10-26) Oscar Cerino: Excelente extensión para bloqueos de noscript, funciona muy bien para lo que requiero. GRACIAS!!!
- (2022-10-21) Сергій Макаренко: Дуже якісний антибаннер
- (2022-07-28) Roman Petrov: Великолепная реализация отличной идеи.
- (2022-06-29) Peter Williamson: A great security app, but a real pain at times. Every time I go a site for the first time I have to make sure I turn off either specific elements or uMatrix as a whole if I trust it, then save it. I also find it's a little too "trigger happy" when I click on a link from an email or site I trust. Case in point, if I have a link to a tracking site regarding an order, if I click the link uMatrix will block it. I have to go into my settings, turn off uMatrix, click the link to track my order then turn uMatrix back on again. Perhaps there's something I've missed in the settings, and I understand why it exists in the first place, but it can be frustrating when I know a link/site is safe.
- (2022-06-29) Peter Williamson: A great security app, but a real pain at times. Every time I go a site for the first time I have to make sure I turn off either specific elements or uMatrix as a whole if I trust it, then save it. I also find it's a little too "trigger happy" when I click on a link from an email or site I trust. Case in point, if I have a link to a tracking site regarding an order, if I click the link uMatrix will block it. I have to go into my settings, turn off uMatrix, click the link to track my order then turn uMatrix back on again. Perhaps there's something I've missed in the settings, and I understand why it exists in the first place, but it can be frustrating when I know a link/site is safe.
- (2021-11-25) Roy Williamson: It just worked! Wow. Seriously impressed. These days extensions overpromise and under deliver. this is the opposite.
- (2021-11-25) Roy Williamson: It just worked! Wow. Seriously impressed. These days extensions overpromise and under deliver. this is the opposite.
- (2021-11-13) Nurak Ibinski: Wichtigste Erweiterung überhaupt.
- (2021-10-26) Cristobal Rodriguez: Error para Desarrolladores, las webs en otro idioma uMatrix bloquea poder traducir las webs del ingles al español, por ejemplo esta web https://www.macrumors.com/, es una lastima la voy a desinstalar y ademas la publicidad de todas las webs las bloquea bien pero deja el espacio de la publicidad en blanco. uBlock Origin y otros bloqueadores no dejan el espacio de la publicidad en blanco y eso esta mal para leer la webs
- (2021-10-19) Béla Tóth: Rendkívül hasznos segédlet. Nemcsak azért, mert kizárja a harmadik felek közbeékelődését, hanem részletesen szemlélteti, hogy az aktuális weboldal milyen scripteket, kívülre mutató linkeket, adatbekéréseket stb verszélyforrásokat tartalmaz. És ezek működését akár részleteiben ki lehet iktatni.
- (2021-10-14) Paul Mullane: If you need help.. great little tutorial here https://proprivacy.com/privacy-service/guides/lifehacks-setup-umatrix-beginners
- (2021-10-14) Paul Mullane: If you need help.. great little tutorial here https://proprivacy.com/privacy-service/guides/lifehacks-setup-umatrix-beginners
- (2021-09-30) Fauzi Bin Ridho (FONZ): the best security extension just got a few updates. i do hope it can make a permanent comeback though. thankfully it did get a few maintenance patches. lets hope umatrix can see a reason to keep being alive and well...
- (2021-09-30) Fauzi Bin Ridho (FONZ): the best security extension just got a few updates. i do hope it can make a permanent comeback though. thankfully it did get a few maintenance patches. lets hope umatrix can see a reason to keep being alive and well...
- (2021-06-28) кен енн: шедевр
- (2021-06-27) Clément: Indispensable pour surfer tranquilement.
- (2021-06-22) Martin Liebetruth: Standard-Entwicklertools des Browsers sind wesentlich ausführlicher
- (2021-05-25) Marcin Pawlik: Super bo blokuje co trzeba co ma nieblokować to nieblokuje
- (2021-04-14) Ramón Telleria: Lo empecé a usar en el 2017 y me funcionaba bien con facebook; pero ahora que lo he vuelto a usar después de estar sin computadora por 3 años, no me deja cargar facebook.
- (2021-01-21) Clemens Ratte-Polle: Very complicatedt, but seems to sum up all AdBlockers, Anti-Trackers and much more :) What it needs? Not only yes or no, red or green. Additionally options: Temporarily for the session in orange and Blue for permanent but globally allowance over all URLs. This would be finde :) Could you please make the Klick-Board scrollable, i cant see the bottom options - my screen resolution is not so great.^^
- (2021-01-21) Clemens Ratte-Polle: Very complicatedt, but seems to sum up all AdBlockers, Anti-Trackers and much more :) What it needs? Not only yes or no, red or green. Additionally options: Temporarily for the session in orange and Blue for permanent but globally allowance over all URLs. This would be finde :) Could you please make the Klick-Board scrollable, i cant see the bottom options - my screen resolution is not so great.^^
- (2020-12-17) Sébastien Marchandeau: Très bonne extension. Malheureusement la synchronisation ne fonctionne plus depuis quelques jours...
- (2020-12-11) Ken Heisenberg: Top privacy/productivity addon. This one + uBlock Origin are a must extensions.