Wattspeed

Name: Wattspeed
Rating: 5 (4 reviews)
Author: Wattspeed

By: Wattspeed

Wattspeed is a browser extension that offers powerful web technologies insights each time you open a new web page.

Download

Install

Features & Capabilities

Mobile-friendly test
Google Lighthouse scores
HTML5 validation
Accessibility checker
Mixed content & JSON-LD structured data snippet detection

and more...

What web server is behind the URL?
What Analytics tool is used to get visitor insights?
What Marketing or Chat tools are used to convert the visitors?
What Advertising network is running in order to sell ads?
What CMS powers the forum, blog or the online shop?
What CSS and JS frameworks are used to build that user interface?

User Growth & Download Statistics

Add-on

By:

Wattspeed

Daily users:

Rating:

5.00

(4)

Version:

5.0.0 Last updated: 2023-10-11

Version code:

5635350

Creation date:

2018-08-10

Risk:

Permissions:

Host permissions:

http://*/*
https://*/*

Size:

137.84KB

Email:

he*****@wattspeed.com

URLs:

Website

Full description:

Source:

Firefox Add-ons Store

Data ingested on:

2026-06-24

Compare stats and ranking:

Ranking

# 32,470 ▲ 104

Other platforms

Wattspeed (v4.4.0)

1,000 4.93

(27)

For Developers

Monetize with App Pass Boost with Extension Booster

Contact the developer

Chrome-Stats does not own this Firefox add-on. Please use these information below to contact the Firefox add-on developer.

Developed by:

Wattspeed

Firefox Add-ons Store

https://addons.mozilla.org/firefox/addon/wattspeed/

Email:

he*****@wattspeed.com

Website:

https://wattspeed.com/

Permission Change History

2023-07-20: Version 4.2.0 → 4.4.0

Add Host permissions: http://*/* https://*/*

Add Permissions: scripting

User Reviews

by 远离*****, 2025-04-21

by 敬念*****, 2025-03-16

Excelent for a quick one-click verification of HTML, accessibility, responsivenes and performance. Available for firefox and crome. Very appreciated.

by ol*****, 2021-07-04

View all user reviews ›

Is Wattspeed Safe?

Risk impact

Risk impact measures the level of extra permissions an extension has access to. A low risk impact extension cannot do much harms, whereas a high risk impact extension can do a lot of damage like stealing your password, bypassing your security settings, and accessing your personal data. High risk impact extensions are not necessarily malicious. However, if they do turn malicious, they can be very harmful.

Wattspeed requires some sensitive permissions that could impact your browser and data security. Exercise caution before installing.

Risk impact analysis details

Critical Grants access to browser tabs, which can be used to track user browsing habits and history, presenting a privacy concern.
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Risk likelihood

Risk likelihood measures the probability that a Firefox add-on may turn malicious. This is determined by the publisher and the Firefox add-on reputation on Firefox Add-ons Store, the amount of time the Firefox add-on has been around, and other signals about the Firefox add-on. Our algorithms are not perfect, and are subject to change as we discover new ways to detect malicious extensions. We recommend that you always exercise caution when installing a Firefox add-on.

Wattspeed has earned a fairly good reputation and likely can be trusted.

Risk likelihood analysis details

High This extension has low user count. Unpopular extensions may not be stable or safe.
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