# SpeedVitals

> Perform Web Vitals Test & TTFB Test on Multiple Locations & Devices. SpeedVitals Extension helps measure the performance of a website directly from that website itself.

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

## Overview

- **ID:** `speedvitals`
- **Platform:** Firefox
- **Type:** Firefox add-on
- **Status:** Available
- **Publisher:** SpeedVitals
- **Category:** web-development
- **Daily users:** 249
- **Weekly downloads:** 4
- **Rating:** 2.33 / 5 (3 ratings)
- **Version:** 2.4.1
- **Last updated:** 2023-06-28
- **First published:** 2021-10-15
- **Size:** 46 KB
- **Data as of:** 2026-09-10
- **Store listing:** [Firefox Add-ons Store](https://addons.mozilla.org/firefox/addon/speedvitals/)
- **Website:** [https://speedvitals.com/contact-us](https://speedvitals.com/contact-us)
- **Privacy policy:** [https://addons.mozilla.org/firefox/addon/speedvitals/privacy/](https://addons.mozilla.org/firefox/addon/speedvitals/privacy/)

## Description

SpeedVitals is a powerful free Chrome extension designed to measure and analyze your website's performance directly on the site. It utilizes Lighthouse for lab data and Chrome's User Experience API (CrUX) for real user field data, offering comprehensive Web Vitals metrics such as FCP, LCP, CLS, TTI, and Speed Index alongside TTFB and page size.

With SpeedVitals, you can run performance tests from over 35 global locations and across more than 30 devices, ensuring accurate multi-location and multi-device assessments. It also features visual tools including resource distribution graphs, waterfall charts, a layout shift visualizer for diagnosing CLS issues, and code coverage analysis to identify unused CSS and JavaScript resources. Additionally, SpeedVitals Pro Tips provides expert optimization advice tailored to various platforms like WordPress, helping you boost your site's speed and user experience effectively.

## Rankings

- #7,344 — Overall
- #71 — spend
- #75 — speed
- #81 — performance
- #135 — device
- #151 — testing

## Permissions and access

### Permissions

- `activeTab`
- `storage`
- `cookies`
- `https://*.speedvitals.com/`
- `https://*.speedvitals-dev.com/`

## Safety

- **Risk impact:** Low risk impact
- **Risk likelihood:** Moderate risk likelihood

### Analysis details

- Request access to the following domains: speedvitals.com, speedvitals-dev.com
- 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).

## Similar extensions and apps

- [Web Vitals Extension](https://chrome-stats.com/d/web-vitals-extension) — 24 users
- [Web Vitals Tracker](https://chrome-stats.com/d/web-vitals-tracker) — 10 users
- [LoadFocus: Page Speed Monitor](https://chrome-stats.com/d/loadfocus-page-speed-monitor) — 1 users
- [Page Performance Test](https://chrome-stats.com/d/page-performance-test) — 463 users, 3.75 / 5
- [WebVitals Pro](https://chrome-stats.com/d/webvitals-pro) — 34 users, 1.00 / 5
- [All-In-One PageSpeed Test](https://chrome-stats.com/d/all-in-one-pagespeed-test) — 400 users, 4.45 / 5
- [Website Speed Tester](https://chrome-stats.com/d/website-speed-tester) — 5 users
- [Siteimprove Browser Extension](https://chrome-stats.com/d/digital-certainty-index) — 197 users, 1.67 / 5
- [Speed Test Pro](https://chrome-stats.com/d/speed_test_pro) — 8 users
- [Metricly - Page Speed & SEO Audit](https://chrome-stats.com/d/metricly-page-speed-seo-audit)
- [Quick Performance Viewer](https://chrome-stats.com/d/quick-performance-viewer)
- [Page Speed Tester](https://chrome-stats.com/d/page-speed-testerrrr)

---

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