# WebVitals Pro

> Monitor website performance and resource usage

Canonical page: [https://chrome-stats.com/d/webvitals-pro](https://chrome-stats.com/d/webvitals-pro)

## Overview

- **ID:** `webvitals-pro`
- **Platform:** Firefox
- **Type:** Firefox add-on
- **Status:** Available
- **Publisher:** 99OK
- **Category:** web-development
- **Daily users:** 34
- **Weekly downloads:** 1
- **Rating:** 1.00 / 5 (1 ratings)
- **Version:** 1.0
- **Last updated:** 2024-08-28
- **First published:** 2024-08-27
- **Size:** 21 KB
- **Data as of:** 2026-09-09
- **Store listing:** [Firefox Add-ons Store](https://addons.mozilla.org/firefox/addon/webvitals-pro/)

## Description

Track and display key performance metrics (Load Time, FCP, LCP, FID, CLS)
Monitor resource usage (CPU and memory)
Track network information (request count and data transferred)
Historical data storage for performance trends
Customizable options for displayed metrics and alert thresholds
Real-time metric updates
Easy-to-use popup interface

## Rankings

- #19,300 — Overall
- #98 — usage
- #106 — performance
- #124 — resource
- #193 — trend
- #241 — transfer

## Permissions and access

### Permissions

- `tabs`
- `storage`
- `<all_urls>`
- `webNavigation`

### 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 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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- [SpeedVitals](https://chrome-stats.com/d/speedvitals) — 247 users, 2.33 / 5
- [SpeedSentry: Website Performance Monitor](https://chrome-stats.com/d/speedsentry-website) — 4 users
- [Simple Speed Monitor](https://chrome-stats.com/d/simple-speed-monitor)
- [Page Speed Monitor](https://chrome-stats.com/d/page-speed-monitor) — 1 users, 1.00 / 5

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