Custom CSS Injector

Custom CSS Injector is a simple, focused extension that lets you restyle any website with your own CSS rules. Using the popup interface, you can choose the current tab or specify a domain, paste your custom CSS, and instantly apply it to change colours, fonts, spacing, layout, or hide and show elements on the page. It’s an easy way to fine-tune cluttered layouts, improve readability, or create a more comfortable browsing experience tailored to your personal preferences.

The extension uses only the permissions it needs to inject CSS into the active tab and to save your settings for future visits. Your custom styles are stored locally via chrome.storage so you can quickly reuse or adjust them later. Custom CSS Injector does not request access to your browsing history and is designed for users who want a lightweight, transparent tool to visually customise websites without complex configuration.