Your browser, your rules.
Inject CSS and JavaScript into any site in real time, without opening DevTools. Visual inspector, advanced CSS editor, debug console, and a full IDE based on Monaco, all in one extension.
Visual Quick Edit
Colors, gradients, typography, layout, borders, shadows, and transitions without writing CSS. Edit states (:hover, :focus, ::before/::after) and each breakpoint separately.
Full IDE with Monaco
The same editor behind VS Code, right in your browser, for when you'd rather write the CSS and JavaScript by hand.
Dedicated debug console
Logs organized by rule, without mixing with the page's own console.
No telemetry
Local processing in your browser. No personal data is collected — Google Drive sync is optional and uses your own account.
Want to know more about how Njectify handles data and permissions? Read the Privacy Policy and Terms of Service of Njectify, or read the blog post with the details of each feature.