The most common uses are ad blocking, applying a new color scheme, and eliminating unwanted page elements.

[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.

[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.

[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.