Stylish

Short description: User style manager

Stylish

Screenshot

Screenshot of Stylish

Original author(s)| Jason Barnabe
Initial release| 9 October 2005; 20 years ago (2005-10-09)[1]
Stable release(s)

| Firefox| 3.1.8 / 28 July 2018; 7 years ago (2018-07-28)[2]

|

Chrome| 2.1.4 / 26 April 2022; 4 years ago (2022-04-26)[3]
Opera| 1.3.1 / 5 May 2015; 11 years ago (2015-05-05)[4]
Safari| 2.1.0 / 29 June 2018; 7 years ago (2018-06-29)

Repository| Mozilla (XUL/XPCOM)

Chrome, Opera
Safari

Opera 12 (Presto)
Type| Browser extension
License| Freemium

Stylish is a user style manager that can change the appearance of web pages in a user's browser without changing their content by including user-supplied CSS style sheets with those supplied by the web site itself. The Stylish browser extension includes tools with which to write user styles, and can install user styles written by other Stylish users from a companion website. These user styles may be more or less selective, targeting just one web page, or all of the pages on a domain, or every page on the web.

Stylish was originally developed by Jason Barnabe as an XUL/XPCOM add-on for Mozilla Firefox. A Chrome extension followed in 2010,[5] which was released for Blink-based Opera 15 in 2013[6][7] and as a Firefox WebExtension in 2017.[8][9] Similar extensions for Safari[10] and for Presto-based Opera[11] are distributed as 'Stylish' by other developers with Barnabe's approval.[12][13]

## Contents

* 1 Technical details
* 2 Privacy issues
* 3 Alternatives to Stylish
* 4 See also
* 5 References
* 6 External links

## Technical details

User styles are CSS code designed to alter the appearance of one, some, or all sites. Stylish for Firefox can additionally style the skin of the browser itself, but the Android version does not support this because the user interface is built in native Android code. The styles are applied only to the targets specified. Individual user styles can be enabled or disabled without having to restart the browser.

User styles are added to the CSS rules provided by the site, but can also override the site's styling (often requiring the `!important` keyword for each replacement rule). The most common uses are ad blocking, applying a new color scheme, and eliminating unwanted page elements.[14]

There are three classes of user styles. Site styles change the appearance of a particular web site. Global styles change the appearance of all web sites. App styles change the appearance of the Firefox user interface, only supported on Firefox. It is similar to the `userChrome.css` CSS file used by Firefox and Mozilla-based browsers.

## Privacy issues

In September 2016 Jason Barnabe, the creator of Stylish and userstyles.org, announced that, having lost interest in the project, he had "chosen Justin Hindman as the next leader of Stylish and userstyles.org."[15] Hindman had no prior connection to either Stylish or userstyles.org,[16] and it soon became clear that Barnabe had simply sold them to Hindman[17] in a straw purchase for Israeli analytics company SimilarWeb.[18]

In December 2016 Hindman began releasing updates to Stylish for Chrome[19] which returned a perfect replica of the user's browsing activity to Userstyles.[20] On 3 January 2017 he announced a "partnership" with SimilarWeb in which "Stylish users [would] be joining SimilarWeb’s market research panel.".[21] A Firefox web extension (3.0.1) was released on 10 November, after a final update (2.1.1) to the Stylish XUL+XPCOM add-on on 31 October to migrate user styles to a webextension-compatible database.[8][22]

In July 2018, after these issues were publicized by a software engineer,[23] Stylish was pulled from both the Chrome Web Store and Mozilla Add-ons, as well as being automatically uninstalled for all existing users.[24][25][26] Stylish returned to Mozilla Add-ons on 16 August[27] and to the Chrome Web Store on 5 November[19] with the same logic but sporting a new opt-in page asking users to agree to the data collection when the extension was installed.[28][29] Firefox now reports fewer users of Stylish than its more popular alternative, Stylus.[30][31]

## Alternatives to Stylish

A userscript manager such as Greasemonkey or Tampermonkey can add a local style sheet to a web page by adding the style sheet content to an HTML `<style>` tag and adding the tag to the page.[32] User styles from Userstyles.org can be downloaded as user scripts for use with a userscript manager.

Alternative user style managers include Stylus[33] and xStyle,[34] which are derived from Stylish for Chrome,[35][36] aStyle,[37] reStyle,[38] and Website Theme Manager.[39]

In Firefox, user styles for web sites and browser chrome can be added to local files `userContent.css`[40] or `userChrome.css`,[41] respectively. As of Firefox 69, user must switch the `toolkit.legacyUserProfileCustomizations.stylesheets` preference to true in `about:config` in order to load these files.[42]

## See also

* Browser extension
* Stylus (browser extension)

## References

1. ↑ np [Jason Barnabe] (9 October 2005). "Stylish 0.1.1 Released [11 Oct"]. http://forums.mozillazine.org/viewtopic.php?t=327735.
2. ↑ "Stylish - Custom themes for any website Version History". https://addons.mozilla.org/en-US/firefox/addon/stylish/versions/.
3. ↑ "Stylish - Custom themes for any website". https://chrome.google.com/webstore/detail/stylish-custom-themes-for/fjnbnpbmkenffdnngjfgmeleoegfcffe.
4. ↑ "Stylish extension - Opera Add-ons". https://addons.opera.com/en-gb/extensions/details/stylish/?display=en&page=3.
5. ↑ Barnabe, Jason (1 March 2010). "Stylish for Google Chrome". https://forum.userstyles.org/discussion/17761/stylish-for-google-chrome.
6. ↑ Barnabe, Jason (3 July 2013). "Stylish for Chrome and Opera (15+) 1.2b". https://forum.userstyles.org/discussion/36378/stylish-for-chrome-and-opera-15-1-2b.
7. ↑ "Stylish extension - Opera add-ons". Opera Software ASA. https://addons.opera.com/en-gb/extensions/details/stylish/?display=en&page=3.
The oldest comment is dated 26 July 2013.
8. ↑ 8.0 8.1 natalieg (2 November 2017). "New version for Firefox". userstyles.org. https://forum.userstyles.org/discussion/60992/new-version-for-firefox.
9. ↑ "Stylish - Custom themes for any website Version History". Mozilla. https://addons.mozilla.org/en-US/firefox/addon/stylish/versions/.
Version 3.0.1 is the first Stylish for Firefox WebExtension release; version 2.1.1 is the last Stylish XUL/XPCOM add-on release.
10. ↑ Sobolev, Vladimir. "Stylish for Safari". http://sobolev.us/stylish/.
11. ↑ gera2ld. "Stylish for Opera". Opera Software ASA. https://addons.opera.com/en/extensions/details/stylish-for-opera/.
12. ↑ Barnabe, Jason (9 April 2014). "Stylish for Safari". https://forum.userstyles.org/discussion/comment/87494/#Comment_87494.
13. ↑ Barnabe, Jason (1 January 2013). "Stylish for Opera!". https://forum.userstyles.org/discussion/34075/stylish-for-opera.
14. ↑ "Make the whole Web look better with Stylish," Nathan Willis, Mon 7 May 2007.
15. ↑ JasonBarnabe (29 September 2016). "The new leader of Stylish and userstyles.org". userstyles.org. https://forum.userstyles.org/discussion/51747/the-new-leader-of-stylish-and-userstyles-org.
16. ↑ hideheader (29 September 2016). "The new leader of Stylish and userstyles.org". userstyles.org. https://forum.userstyles.org/discussion/51747/the-new-leader-of-stylish-and-userstyles-org. "Justin hasn't posted any styles, isn't (yet) a forum admin, nor has he posted to the forum before today."
17. ↑ hideheader (8 October 2016). "The new leader of Stylish and userstyles.org". userstyles.org. https://forum.userstyles.org/discussion/51747/the-new-leader-of-stylish-and-userstyles-org. "OMG, you sold it, didn't you Jason? The site was moved to Amazon Web Services, the domain name was transferred and the new owner hidden behind a shell (domainsbyproxy.com), the repositories were transferred to a commercial Github account with no public-facing members."
18. ↑ hideheader (8 October 2016). "The new leader of Stylish and userstyles.org". userstyles.org. https://forum.userstyles.org/discussion/51747/the-new-leader-of-stylish-and-userstyles-org. "(a) similarweb.com is a web analytics company and (b) that new Userstyles form was created in SimilarWeb's Google Docs account. Naturally I'm curious, Justin. Does SimilarWeb.com own Stylish and Userstyles, or are you an employee who is simply using the company butter?"
19. ↑ 19.0 19.1 "Version History of Stylish for Chrome". Crx4Chrome. https://www.crx4chrome.com/history/1184/.
20. ↑ hideheader (20 December 2016). "Release Notes - Stylish 1.6.3 is out!". userstyles.org. https://forum.userstyles.org/discussion/53048/release-notes-stylish-1-6-3-is-out#Comment_109446. "If you opt-in to the 'Style Library' then Justin collects every URL you browse to, along with the URL of the page you were just viewing. That is, he's collecting your complete browsing history."
21. ↑ Justin Hindman (3 January 2017). "Announcement to the Community". userstyles.org. https://forum.userstyles.org/discussion/53233/announcement-to-the-community.
22. ↑ "Stylish - Custom themes for any website Version history". Add-ons for Firefox. https://addons.mozilla.org/en-US/firefox/addon/stylish/versions/.
23. ↑ Heaton, Robert (2 July 2018). ""Stylish" browser extension steals all your internet history". https://robertheaton.com/2018/07/02/stylish-browser-extension-steals-your-internet-history/.
24. ↑ Goodin, Dan (6 July 2018). ""Stylish" extension with 2M downloads banned for tracking every site visit". Condé Nast. https://arstechnica.com/information-technology/2018/07/stylish-extension-with-2m-downloads-banished-for-tracking-every-site-visit/. Retrieved 6 July 2018.
25. ↑ Tung, Liam (5 July 2018). "Use this popular Chrome, Firefox browser add-on? Google, Mozilla just banished it" (in en). ZDNet. https://www.zdnet.com/article/use-this-popular-chrome-firefox-add-on-google-mozilla-just-banished-it/.
26. ↑ Cimpanu, Catalin (4 July 2018). "Chrome and Firefox Pull Stylish Add-On After Report It Logged Browser History" (in en-us). Bleeping Computer. https://www.bleepingcomputer.com/news/software/chrome-and-firefox-pull-stylish-add-on-after-report-it-logged-browser-history/.
27. ↑ @VessOnSecurity (16 August 2018). "Remember the Firefox extension Stylish that was found to snarf browser history? That was removed from the store, then added again, then again removed? Well, it's back". https://twitter.com/VessOnSecurity/status/1030145684182327298.
28. ↑ Brinkmann, Martin (17 August 2018). "Stylish add-on makes a return". gHacks. https://www.ghacks.net/2018/08/17/stylish-add-on-returns/.
29. ↑ Heaton, Robert (16 August 2018). ""Stylish" is back, and you still shouldn't use it". https://robertheaton.com/2018/08/16/stylish-is-back-and-you-still-shouldnt-use-it/.
30. ↑ "Stylish - Custom themes for any website – Get this Extension for 🦊 Firefox (en-US)". Add-ons for Firefox. https://addons.mozilla.org/en-US/firefox/addon/stylish/versions/.
31. ↑ "Stylus – Get this Extension for 🦊 Firefox (en-US)". Add-ons for Firefox. https://addons.mozilla.org/en-US/firefox/addon/styl-us/.
32. ↑ Pilgrim, Mark (2005). 4.13. Adding CSS styles. http://greasemonkey.win-start.de/patterns/add-css.html.
33. ↑ "Stylus – Get this Extension for 🦊 Firefox (En-US)". https://addons.mozilla.org/en-US/firefox/addon/styl-us/.
34. ↑ "XStyle – Get this Extension for 🦊 Firefox (En-US)". https://addons.mozilla.org/en-US/firefox/addon/xstyle/.
35. ↑ "Stylus". 25 October 2021. https://github.com/openstyles/stylus.
36. ↑ "XStyle". 25 October 2021. https://github.com/FirefoxBar/xStyle.
37. ↑ "AStyle-Custom theme,custom style – Get this Extension for 🦊 Firefox (En-US)". https://addons.mozilla.org/en-US/firefox/addon/astyle_easy/.
38. ↑ "ReStyle – Get this Extension for 🦊 Firefox (En-US)". https://addons.mozilla.org/en-US/firefox/addon/re-style/.
39. ↑ "Website Theme Manager – Get this Extension for 🦊 Firefox (En-US)". https://addons.mozilla.org/en-US/firefox/addon/website-theme-manager/.
40. ↑ "UserContent.CSS - MozillaZine Knowledge Base". http://kb.mozillazine.org/UserContent.css.
41. ↑ "UserChrome.CSS - MozillaZine Knowledge Base". http://kb.mozillazine.org/UserChrome.css.
42. ↑ "Modifying the Default Skin - Archive of obsolete content | MDN". https://developer.mozilla.org/en-US/docs/Archive/Mozilla/XUL/Tutorial/Modifying_the_Default_Skin.

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