User JavaScript and CSS on any website. Userscript's and userstyle's — simple extension to inject own JavaScript or CSS rules to any page.

CSS preprocessors SASS and SCSS are supported. Edit styles and keep track of changes without reloading. Works with latest Google requirements on Manifest V3. Inject external JS …

Apr 11, 2025 · CSS and JavaScript, when used properly, also have the potential to allow for accessible web experiences, or they can significantly harm accessibility if misused. This article …

Only JS and CSS content is taken from the included rules, other properties of the rule are ignored. The choice of SASS or SCSS preprocessor syntax is automatic, based on the presence of {;} …

Snippet functionality will be implemented based on this page. You cannot import or export ES6 modules between rules, but you can use modules from the Internet, for example in this way: In …

Apr 1, 2009 · In all recent browsers you can just use document.head.appendChild. This solution is far better! Imagine you have more than one stylesheets: With @bobince solution your newly …

Jan 9, 2025 · Managing user data is a fundamental feature in many applications. In this blog, we’ll explore a simple yet powerful user management system built with HTML, CSS, and …

Feb 25, 2016 · What is a good way to apply styling dynamically (i.e. the value of styles are created at runtime) to HTML elements with JavaScript? I'm looking for a way to package a …

Mar 24, 2025 · I use it to test js injection for work to digest and convert tables into interactable ChartJS canvas elements, or for personal handy things like spitting out drive distances on an …

Jun 10, 2024 · User JavaScript and CSS on any website. Image from store. Description from store Userscript's and userstyle's — simple extension to inject own JavaScript or CSS rules to any …