# Coolant — Tab Thermal Optimizer

> Reduces CPU/GPU load from heavy animations, backdrop-filters, blend-modes and background videos on any tab — with a built-in performance panel to verify the savings live.

Canonical page: [https://chrome-stats.com/d/coolant-tab-thermal-optimizer](https://chrome-stats.com/d/coolant-tab-thermal-optimizer)

## Overview

- **ID:** `coolant-tab-thermal-optimizer`
- **Platform:** Firefox
- **Type:** Firefox add-on
- **Status:** Available
- **Publisher:** Farbod
- **Category:** other
- **Daily users:** 1
- **Version:** 1.0.1
- **Last updated:** 2026-08-22
- **First published:** 2026-08-19
- **Size:** 69 KB
- **Data as of:** 2026-09-07
- **Store listing:** [Firefox Add-ons Store](https://addons.mozilla.org/firefox/addon/coolant-tab-thermal-optimizer/)

## Description

Coolant watches every tab for CPU/GPU-heavy visual effects — infinite CSS animations, backdrop-filter blur/glass effects, blend-modes, and autoplaying background videos — and suppresses them once they exceed a configurable size/duration threshold, without altering page content or layout. Features: • Three modes (Normal / Eco / Ultra) to control how aggressively effects are suppressed • Per-site enable/disable toggle • Live stats: how many elements/animations/videos are currently being suppressed on the active tab • Optional Debug Mode: a real, measured (not estimated) CPU-overhead report across all open tabs • Also offers an optional codec-preference hook that discourages VP9/HEVC playback in favor of lighter-weight codecs on CPU-constrained systems — automatically disabled on DRM-protected streaming sites (Netflix, Spotify, Disney+, Hulu, HBO Max, Prime Video, Twitch, Apple). All data stays on your device. Coolant does not collect, transmit, or sell any personal data.

## Rankings

- #92,013 — Overall
- #86 — optimize

## Permissions and access

### Permissions

- `tabs`
- `storage`
- `scripting`

### Host permissions

- `<all_urls>`

### Content script matches

- `<all_urls>`

## Safety

- **Risk impact:** High risk impact
- **Risk likelihood:** High risk likelihood

### Analysis details

- Grants access to browser tabs, which can be used to track user browsing habits and history, presenting a privacy concern.
- This extension was recently updated in the past month. New updates may not be stable or safe.

> Some risk analysis details are omitted from this free response. [Upgrade to view the full analysis](https://chrome-stats.com/pricing).

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Source: [Chrome-Stats](https://chrome-stats.com/d/coolant-tab-thermal-optimizer)