Gemini Expressive Firefox

Gemini Expressive

By: fertwbr
Enhances the Gemini web UI with a timeline, collapsible code blocks, and dynamic Material You theming.

Features & Capabilities

A Better Way to Experience Gemini Enhance your Gemini web UI with persistent timeline navigation, intelligent code collapsing, and dynamic Material You theming. Up and running in less than a minute!

✨ Key Features

  • Interactive Timeline Navigation: Stop scrolling endlessly. The persistent timeline automatically maps your entire conversation, allowing you to instantly jump between your prompts and Gemini's responses with a single click.
  • Smart Code Collapsing: Keep your workspace clean. Automatically add 'Collapse/Expand' buttons to massive code blocks. Use the floating navigation arrows to quickly jump between different code segments in long responses.
  • Enhanced Code Headers: Instantly recognize what you're looking at. The extension detects the programming language of each block, extracts file names directly from the code context, and displays native Material icons in the header.
  • Prompt Snippets & Shortcuts: Save time typing repetitive instructions. Create custom shortcuts for your most used prompts. Just type your prefix (like '/') followed by your keyword to expand it.
  • Dynamic Material Theming: Make Gemini truly yours. Select a seed color and the extension will mathematically generate a complete, accessible Material Design 3 palette, seamlessly applying it to the entire Gemini interface in both Light and Dark modes.
🔒 Privacy First & Open Source

Gemini Expressive operates entirely locally on your device by dynamically injecting custom CSS and scripts directly into the DOM. It does not track, save, or transmit any of your conversation data to external servers. The entire codebase is open-source and available on GitHub. You can review the architecture, audit the permissions, or contribute to the community!

User Growth & Download Statistics

Manifest V3 Add-on
By:
fertwbr
Daily users:
3
Version:
3.0.0 Last updated: 2026-05-14
Version code:
6261584
Creation date:
2026-04-06
Risk:
Moderate risk impact High risk likelihood
Permissions:
Content scripts matches:
  • gemini.google.com
Size:
113.23KB
Email:
co*****@fertwbr.com
URLs:
Website ,Privacy policy
Full description:
See detailed description
Source:
Firefox Add-ons Store
Data ingested on:
2026-06-03
Compare stats and ranking:

Contact the developer

Chrome-Stats does not own this Firefox add-on. Please use these information below to contact the Firefox add-on developer.
Developed by:
fertwbr
Firefox Add-ons Store
https://addons.mozilla.org/firefox/addon/gemini-expressive/
Email:
co*****@fertwbr.com
Website:
https://tools.fertwbr.com/feedback?source=geminiexpressive

Is Gemini Expressive Safe?

Risk impact
Risk impact measures the level of extra permissions an extension has access to. A low risk impact extension cannot do much harms, whereas a high risk impact extension can do a lot of damage like stealing your password, bypassing your security settings, and accessing your personal data. High risk impact extensions are not necessarily malicious. However, if they do turn malicious, they can be very harmful.

Gemini Expressive requires a few sensitive permissions. Exercise caution before installing.

Risk impact analysis details
  • Critical Request access to the following domains: google.com
  • High ******* ******* **** *** ****** ***** *** ***** ** ******* **** ********* ********* ** * *********** *****
Risk likelihood
Risk likelihood measures the probability that a Firefox add-on may turn malicious. This is determined by the publisher and the Firefox add-on reputation on Firefox Add-ons Store, the amount of time the Firefox add-on has been around, and other signals about the Firefox add-on. Our algorithms are not perfect, and are subject to change as we discover new ways to detect malicious extensions. We recommend that you always exercise caution when installing a Firefox add-on.

Gemini Expressive is recently added, and hasn't been around long enough for us to gather enough data to accurately assess its risk level.

Risk likelihood analysis details
  • High This extension was recently updated in the past month. New updates may not be stable or safe.
  • High **** ********* *** *** **** ****** ********* ********** *** *** ** ****** ** *****
  • Medium **** ********* *** ***** ** *** **** * ******* *** ********** *** *** ** ****** ** *****
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