Custom Theme Any Website™

Style any website with custom CSS. Local and private - no data collection, no browsing history sent anywhere.

Tired of websites that hurt your eyes, waste your space, or just look plain ugly? Custom Theme Any Website™ lets you restyle any webpage — fonts, colors, layout, dark modes — in seconds. No coding knowledge needed to get started, and a full CSS editor if you want total control. Your browser, your rules. One extension, every website. ✨ What you can do: 🎨 Style any website — YouTube, Reddit, GitHub, Gmail, Google, or literally any URL you visit ⚡ One-click toggle — enable or disable any style instantly without reloading 🖊️ Built-in CSS editor — write your own styles with live preview, auto-format, and lint checking 🔍 Element inspector — click any part of a page to auto-generate its CSS selector 📁 Style groups — organise styles into folders and toggle entire groups at once ⏰ Scheduled styles — set a time window so dark mode turns on automatically after 8pm ⚡ CSS Variables panel — define a colour once, use it across every style you write 🕰️ Version history — every edit is saved so you can restore any past version 🔄 Cross-device sync — optionally sync styles across all your Chrome devices 🌐 Import from URL — paste a raw CSS link and install it directly, no copy-paste needed 💚 Style health monitor — flags styles that haven't matched any page in 30+ days 🔒 Free, forever. No account. No sign-up. Your styles stay on your device — nothing is ever sent anywhere unless you turn on optional Chrome sync. Questions? Reach out at [email protected] — I read every message. If this extension saves you time, a small donation means the world and keeps development going 💙