Javelin CSS

by Javelin Studios LLC · Developer Tools

Manifest V3 Free

View in Chrome Web Store Data as of 15 Oct 2026

Inject custom CSS into the current webpage.

Users

−3 in 30 days

Rating

0.0 / 5

unchanged in 30 days

Ratings

0 in 30 days

Store rank

#318K

#253K among extensions

Version

1.0

updated 17 Aug 2024

Users

monthly, 2 years

Latest, 15 Oct 2026: 3 usersMove the mouse over the chart for any month

Ratings count

monthly, 2 years

Latest, 15 Oct 2026: 0 ratingsMove the mouse over the chart for any month

The Chrome Web Store rounds user counts down to the leading digit, so the user line moves in steps. The ratings count is exact and is the better signal of real adoption.

About Javelin CSS

Javelin CSS widget, your essential tool for real-time web design experimentation. Whether you're a web developer, designer, or just someone who loves to tinker with the look and feel of websites, this widget offers a seamless way to inject custom CSS directly into any webpage you're currently viewing. With the Live CSS Injector, you can instantly see how your CSS code affects the layout and style of a webpage. This live preview feature allows you to experiment with different styles and design elements, giving you a visual representation of your changes in real time. It's perfect for those who want to fine-tune their design before implementing it in their actual project. Once you're satisfied with the look, simply copy the CSS code from the widget and paste it into your working document or project files. Whether you're tweaking colors, adjusting layouts, or testing new styles, the Live CSS Injector streamlines your workflow, allowing for quick iterations and immediate feedback. Elevate your web design process with the power of real-time CSS editing!