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gorhill
uMatrix
JavaScript2014–2025
gorhill / uMatrix · Archived

uMatrix

uMatrix: Point and click matrix to filter net requests according to source, destination and type

Explore on GitHubRead Hacker News discussions
102Distinct people
123Mentions
4Explicit recommenders
4.7KGitHub stars
REPOSITORY AT A GLANCE

What to know before exploring

What it is

uMatrix: Point and click matrix to filter net requests according to source, destination and type

GitHub

Where it is used

No documented product use was verified in the last source check.

What people are saying

I love uMatrix, but all evidence is that they stopped developing it in 2021. https://github.com/gorhill/uMatrix I don't know the implications of that, it's the only tool I've…

neltnerb used a recommendation phrase. 4 indexed comments match. This is a phrase match, not a verdict.

No classified warning is attached to this page. Read the discussions before treating silence as approval.

Also in these discussions

Mentioned in the same Hacker News threads. That is not proof they are substitutes.

This week on Hacker News

Nov 8–Nov 15 UTC · Direct repository links and separately labeled related project stories. Indexed through 11/15/2026, 2:04:58 PM UTC.

No direct repository links were found in the indexed HN discussions over the past seven days. Older discussions are available below.

Mentions over time

HN mentions by year123 dated mentions

Observed mentions: 2014-12-27 13:39:25 UTC to 2025-12-17 19:45:41 UTC.

01020302014-01-01 00:00:00 UTC to 2015-01-01 00:00:00 UTC (exclusive): 2 mentions; 0 submissions, 2 comments20142015-01-01 00:00:00 UTC to 2016-01-01 00:00:00 UTC (exclusive): 15 mentions; 0 submissions, 15 comments2016-01-01 00:00:00 UTC to 2017-01-01 00:00:00 UTC (exclusive): 18 mentions; 0 submissions, 18 comments2017-01-01 00:00:00 UTC to 2018-01-01 00:00:00 UTC (exclusive): 16 mentions; 0 submissions, 16 comments2018-01-01 00:00:00 UTC to 2019-01-01 00:00:00 UTC (exclusive): 27 mentions; 1 submissions, 26 comments2019-01-01 00:00:00 UTC to 2020-01-01 00:00:00 UTC (exclusive): 12 mentions; 0 submissions, 12 comments20192020-01-01 00:00:00 UTC to 2021-01-01 00:00:00 UTC (exclusive): 9 mentions; 1 submissions, 8 comments2021-01-01 00:00:00 UTC to 2022-01-01 00:00:00 UTC (exclusive): 11 mentions; 3 submissions, 8 comments2022-01-01 00:00:00 UTC to 2023-01-01 00:00:00 UTC (exclusive): 8 mentions; 0 submissions, 8 comments2023-01-01 00:00:00 UTC to 2024-01-01 00:00:00 UTC (exclusive): 3 mentions; 0 submissions, 3 comments2024-01-01 00:00:00 UTC to 2025-01-01 00:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2025-01-01 00:00:00 UTC to 2026-01-01 00:00:00 UTC (exclusive): 2 mentions; 0 submissions, 2 comments2025

Counts come from the repository’s dated source evidence. Index cutoff: 2026-11-02 08:16:59 UTC.

View mention counts and date ranges
UTC ranges include their start and exclude their end. Select a period to filter the source evidence.
PeriodStart (UTC)End (exclusive, UTC)MentionsSubmissionsComments
20142014-01-01 00:00:00 UTC2015-01-01 00:00:00 UTC202
20152015-01-01 00:00:00 UTC2016-01-01 00:00:00 UTC15015
20162016-01-01 00:00:00 UTC2017-01-01 00:00:00 UTC18018
20172017-01-01 00:00:00 UTC2018-01-01 00:00:00 UTC16016
20182018-01-01 00:00:00 UTC2019-01-01 00:00:00 UTC27126
20192019-01-01 00:00:00 UTC2020-01-01 00:00:00 UTC12012
20202020-01-01 00:00:00 UTC2021-01-01 00:00:00 UTC918
20212021-01-01 00:00:00 UTC2022-01-01 00:00:00 UTC1138
20222022-01-01 00:00:00 UTC2023-01-01 00:00:00 UTC808
20232023-01-01 00:00:00 UTC2024-01-01 00:00:00 UTC303
20242024-01-01 00:00:00 UTC2025-01-01 00:00:00 UTC000
20252025-01-01 00:00:00 UTC2026-01-01 00:00:00 UTC202

From the project README

An excerpt from the repository, fetched Nov 13, 2026.

Read the project’s introduction
uMatrix Definitely for advanced users. Keep Github issues for actual bugs. User support is /r/uMatrix. Forked and refactored from HTTP Switchboard. Install manually the latest release, or install from: Firefox AMO To help find issues with ongoing development: uMatrix dev build in Releases (click the latest uMatrix.webext.signed.xpi link of the last pre-resease.) Chrome store To help find issues with ongoing development: uMatrix dev build in Chrome store Opera store You may contribute with translation work: For in-app strings, on Crowdin: uMatrix on Crowdin. For description (to be used in AMO, Chrome store, etc.), submit a pull request. Reference description is here (feel free to improve as you wish, I am not a writer). HTTP Switchboard's documentation is still relevant, except for uMatrix's differences with HTTP Switchboard. You may contribute with documentation: uMatrix's wiki. Warnings Regarding broken sites uMatrix does not guarantee that sites will work fine: it is for advanced users who can figure how to un-break sites, because essentially uMatrix is a firewall which works in relaxed block-all/allow-exceptionally mode out of the box: it is not unexpected that sites will break. So this means do not file issues to report broken sites when the sites are broken because uMatrix does its job as expected. I will close any such issue without further comment. Using uMatrix logger is key to un-break sites: the logger will show you all that uMatrix does internally. I expect there will be community driven efforts for users to help each others. If uMatrix had a home, I would probably set up a forum, but I do not plan for such thing, I really just want to code, not manage web sites. If you need help to un-break a site when using uMatrix, you can try Wilders Security, where you are likely to receive help if needed, whether by me or other users. uMatrix can be set to work in allow-all/block-exceptionally mode with a single click on the all cell in the global scope *, if you prefer to work this way. This will of course break less sites, but you would then lose all the benefits which comes with block-all/allow-exceptionally mode -- though you will still benefit from the 62,000+ blacklisted hostnames by default. License GPLv3.
Read the full README on GitHub

What Hacker News says

12 sources
retpirato·Sep 1, 2019
One thing I found recently That would help with data usage, as well as preventing tracking (like facebook) is uMatrix:https://github.com/gorhill/uMatrix. It allows you to selectively block ads, cookies, frames, scripts, xhr etc; from each individual source sending data on a particular site. You can even block individual sources across the board & they will be prevented from sending data on any site, as long as uMatrix is enabled. The link is the official github & contains links to the chrome, firefox, & opera versions.
In Tell HN: Thank you for not redesigning Hacker News
dngray·Apr 23, 2019
> But AFAICT from the bloomberg article, at least (I won't go through the Oath hoops to read engadget), I didn't need to allow oath that to read that. I have my browser configured like so https://github.com/gorhill/uMatrix/wiki/How-to-block-1st-par... For that page all I had was: https://i.imgur.com/DQe8TIr.png you can clearly see oath was not enabled. It would appear you do need to allow 1st-party JavaScript to allow the <script type="application/ld+json"> portion to load which contains the "articleBody": ....." I am connected through my VPN, currently in NL, so yeah, GDPR.
In Apple Face-Recognition Blamed by New York Teen for False Arrest
d0bby·Apr 15, 2019
People are talking about uBlock Origin... I really like it, no doubts it's good and everyone should consider using it. BUT, since we are talking about uBlock Origin, I'd like to mention another awesome extention Raymond Hill made. uMatrix (https://github.com/gorhill/uMatrix) uMatrix alone is very powerful, and will prevent most ads. Yes you as a user need to do the work, but the result is better. If you like the idea of uMatrix, you may also look at NoScript! Actually, I live almost ad free using NoScript + uBlock Origin for at least 2 yrs. $rewrite... what a dumb feature btw!
In Adblock Plus filter lists may execute arbitrary code in web pages
tya99·Jan 26, 2019
A good place to start is https://www.privacytools.io/#browser Spend some time using uMatrix (much better than NoScript these days). If you're running uMatrix you do not need NoScript. Some good documentation in regard to uMatrix: https://www.electricmonk.nl/docs/umatrix_tutorial/umatrix_tu... https://github.com/gorhill/uMatrix/wiki/The-popup-panel https://github.com/gorhill/uMatrix/wiki/How-to-block-1st-par... https://github.com/gorhill/uMatrix/wiki/How-to-create-rules-...
In Open source, privacy-enabled smartphone operating systems

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