Nebula UI | ChatGPT Background Themes

by Stelaris · Functionality & UI

Manifest V3 Free

View in Chrome Web Store Data as of 16 Oct 2026

A chrome extension for ChatGPT Background UI

Users

+1 in 30 days

Rating

2.9 / 5

unchanged in 30 days

Ratings

0 in 30 days

Store rank

#174K

#145K among extensions

Version

1.2.1

updated 8 Nov 2025

Users

monthly, 12 months

Latest, 16 Oct 2026: 13 usersMove the mouse over the chart for any month

Ratings count

monthly, 12 months

Latest, 16 Oct 2026: 8 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 Nebula UI | ChatGPT Background Themes

Wait… why does your ChatGPT look so much better? Because it’s powered by Nebula UI — the ultimate Chrome extension that reimagines your ChatGPT interface with stunning visuals and modern design. With Nebula UI, you can: 🌌 Apply gorgeous, pre-built themes like Deathnote, Monochrome, Hacker Mode, Sketchbook, GPT-5 Style and more. 🖼️ Upload your own custom backgrounds for a personalized vibe. 🎨 Enjoy smooth glass effects, gradients, and animations. ⚡ Automatically restore your favorite theme every time you visit ChatGPT. 💎 We add new themes. No more dull, grey interface. Nebula UI makes ChatGPT feel futuristic, inspiring, and fun to use. ✔ Easy to set up — just click on the theme you want to apply. ✔ Privacy-first — no personal data collected only email. ✔ Built for creators, learners, and anyone who wants ChatGPT to look as powerful as it feels. Upgrade your ChatGPT today and see the difference ✨