Wappalyzer

Name: Wappalyzer
Rating: 4.4082 (512 reviews)
Author: Wappalyzer

Identify technologies on websites

Wappalyzer Browser Extension

Wappalyzer is a powerful browser extension that helps you identify the technologies used by websites in just a few clicks. With support for a vast array of technology categories, including content management systems, eCommerce platforms, web servers, JavaScript frameworks, and analytics tools, Wappalyzer empowers users to gain insights about the tools and technologies behind their favorite websites.

Easily uncover the stack of any site you visit, making it an essential tool for developers, marketers, and tech enthusiasts who want to understand the digital landscape better. Install Wappalyzer today and start exploring the technology behind the web!

Download

By:: Wappalyzer
Daily users:: 134,324+ 3.14K
Rating:: 4.41

(512) 2 new ratings
Version:: 6.10.81 (Last updated: 2025-04-08)
Version code:: 5921948
Creation date:: 2008-12-31
Risk:: High risk impact Low risk likelihood
Permissions:: cookies
storage
tabs
webRequest
http://*/*
https://*/*
Size:: 27.95M
URLs:: Website ,Privacy policy
Full description:: See detailed description
Source:: Firefox Browser Add-ons
Updated:: a day ago

Ranking

# 137 ▲ 5

Other rankings

#18 in Search Tools

#19 in Web Development

#2 in analyze keyword 9

#3 in analyzer keyword 18

#8 in identify keyword 38

Upgrade to see more rankings

Other platforms

Wappalyzer - Technology profiler (v6.10.80)

3,000,000+ 4.56

(1,948)

Wappalyzer - Technology profiler (v6.10.80)

503,678+ 3.90

(55)

User reviews

Pros

Useful for identifying technologies used by websites

Cons

Slows down the browser significantly
High memory usage, consuming up to 700 MB of RAM
Causes CPU usage to spike, impacting performance

Most mentioned

High resource consumption (CPU and memory)
Need for better control options for the extension

These summaries are automatically generated weekly using AI based on recent user reviews. User reviews may be inaccurate, spammy, or outdated.

User reviews

cool extension, however can slow your browser down massively. for example, when loading youtube in firefox, it takes 4 seconds longer with this extension installed

by 🦊‌, 2025-04-16

by Ben Gaudry, 2025-04-13

by Firefox user 18737657, 2025-04-12

View all user reviews

Add-on safety

Risk impact

Wappalyzer 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.
Critical ****** ****** ** *** ********* ****** * *********** ******** **** ** ** *** ******* *** ****** **** **** *** ******* *****
High ****** *** ********* ** ******* *** ******* ******* ** ****** *** *** ******** ******
High ******* ******* **** *** ****** ***** *** ***** ** ******* **** ********* ********* ** * *********** *****

Risk likelihood

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

Risk likelihood analysis details

High This extension was recently updated in the past month. New updates may not be stable or safe.
Low **** ********* *** ***** **** **** * ****** **** ***** ********** *** **** ****** ** ** ****** *** *****
Low **** ********* *** **** **** ****** ******* ********** **** ****** ** ** ****** *** *****
Good **** ********* *** **** **** *******

Upgrade to see full risk analysis details