DO NOT INSTALL, this is spyware and it hogs all your CPU!!

Data collecting company, can't believe that firefox still allows their app here... (Everyone who reads this, please report this addon for abuse!)

Massive violation of privacy.

dont use its spyware.

Allows you to customize websites, BUT there is a catch... It has spyware. If you don't know what spyware is, its a virus that, well, spy's on you and tracks you. This extension will steal your browsing data and sell it to other companies.

There is a similar extension called Stylus, which is basically the same as this but it does NOT have spyware. The link to the extension is: https://addons.mozilla.org/en-CA/firefox/addon/styl-us/

spyware, use stylus instead. the same extension (every single theme works) but without all the spyware

It's a glorious day: Stylus just surpassed Stylish in number of users on AMO. Seriously, don't download this trash extension.

Developer abandoned the extension and added spyware to record your browser history. Use Stylus instead: https://addons.mozilla.org/en-US/firefox/addon/styl-us/

Spyware, do not use

It does not let me do anything I have installed many times but it still does not work

** NOTICE **
Don't use this abandoned project anymore. I read it has analytics tracking as well. Use the fork called Stylus instead: https://addons.mozilla.org/en-US/firefox/addon/styl-us/

TL;DR: ** Use STYLUS instead! **

I used to use this extension a long time ago. Unfortunately it looks like the website has been abandoned and left to rot. The © says 2021, but I suspect that's an automatically updated line. It feels like it's been updated since the last time I used it, but who knows how long ago that actually was.

The website is slow and sometimes crashes and times out. That's server side. Not Firefox. Small styles install, but if they're any more complex than a site skin, it takes too long to install and the longer it takes the more chance the site will crash before it's through.

I wish someone would take this whole thing and fork it into something someone has more passion for than the original authors do. Or let Mozilla Foundation bake it into Firefox.

slow mf

Like another user from NC *named NC* pointed out, while it does do as described it appears the site is all but abandoned. I just installed this extension for the second time, to see if it would perform any better and three minutes into attempting to access userstyles.org, it still hadn't loaded. It is as if someone has forgotten there has to be someone behind the scenes running the website or at least paying less than $4.00 a year to get it to run quickly, possibly smoothly. I do not recommend & suggest finding another extension that is similar where someone takes pride in it, ensuring it runs & is up to date.