# Performance Heatmap

> Marks elements on the page based on their performance metrics.

Canonical page: [https://chrome-stats.com/d/performance-heatmap](https://chrome-stats.com/d/performance-heatmap)

## Overview

- **ID:** `performance-heatmap`
- **Platform:** Firefox
- **Type:** Firefox add-on
- **Status:** Available
- **Publisher:** dhananjayadr
- **Category:** web-development
- **Version:** 1.0
- **Last updated:** 2024-08-24
- **First published:** 2024-08-23
- **Size:** 9.89 KB
- **Data as of:** 2026-09-07
- **Store listing:** [Firefox Add-ons Store](https://addons.mozilla.org/firefox/addon/performance-heatmap/)

## Rankings

- #133,605 — Overall

## Permissions and access

### Permissions

- `activeTab`

## Safety

- **Risk impact:** Very low risk impact
- **Risk likelihood:** Moderate risk likelihood

### Analysis details

- This extension has low user count. Unpopular extensions 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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- [Quick Performance Viewer](https://chrome-stats.com/d/quick-performance-viewer)
- [Performance Bottleneck Finder](https://chrome-stats.com/d/performance-bottleneck-finder)
- [Check Page Performance](https://chrome-stats.com/d/check-page-performance) — 13 users

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Source: [Chrome-Stats](https://chrome-stats.com/d/performance-heatmap)