Gemini Cleaner

Gemini Cleaner is a tiny browser extension that removes some UI clutter from https://gemini.google.com/*.

I built it for myself first: I wanted less upsell noise, less footer chrome, and cleaner chat space.

What it does

• Hide Upgrade buttons/upsells
• Hide the Gemini disclaimer footer block
• Clean up sidebar footer sections
• Hide feedback buttons under responses

Each option is a toggle in the popup and is stored locally in browser extension storage.

Privacy

• No analytics
• No remote requests
• No data collection
• No external API calls

Project layout

• extension/ - extension source loaded by browser
• scripts/ - packaging scripts
• test/ - unit tests for DOM matching logic

Build

npm install
npm run check
npm run build:all

Artifacts end up in dist/:

• gemini-cleaner-chrome-vX.Y.Z.zip
• gemini-cleaner-firefox-vX.Y.Z.xpi

Notes for maintainers

Gemini's DOM changes often. If something stops hiding correctly:

1. Check selectors in extension/styles.css
2. Check text matching in extension/content-logic.js
3. Add a focused test in test/content-logic.test.js

This extension intentionally favors small, readable code over heavy framework setup.