# Web Vitals Tracker

> Measure Core Web Vitals (LCP, FID, CLS, etc.) directly in the browser.

Canonical page: [https://chrome-stats.com/d/web-vitals-tracker](https://chrome-stats.com/d/web-vitals-tracker)

## Overview

- **ID:** `web-vitals-tracker`
- **Platform:** Firefox
- **Type:** Firefox add-on
- **Status:** Available
- **Publisher:** Mr Willie Beck
- **Category:** other
- **Daily users:** 10
- **Weekly downloads:** 1
- **Version:** 1.3
- **Last updated:** 2025-09-08
- **First published:** 2025-09-05
- **Size:** 15 KB
- **Data as of:** 2026-09-10
- **Store listing:** [Firefox Add-ons Store](https://addons.mozilla.org/firefox/addon/web-vitals-tracker/)
- **Website:** [https://uu88.se.net/](https://uu88.se.net/)

## Description

Measure Core Web Vitals (LCP, FID, CLS, etc.) directly in the browser.

## Rankings

- #33,776 — Overall
- #168 — tracker

## Permissions and access

### Permissions

- `tabs`
- `activeTab`
- `storage`
- `<all_urls>`

### Content script matches

- `<all_urls>`

## Safety

- **Risk impact:** High risk impact
- **Risk likelihood:** Moderate 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 website URL may be invalid

> 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/web-vitals-tracker)