Web Component DevTools

Name: Web Component DevTools
Rating: 5 (5 reviews)
Author: Matsuuu

By: Matsuuu

Developer tooling for Web Components and Web Component Libraries

Download

Install Compare

Web Component DevTools is a specialized Chrome extension designed for developers working with Web Components and Web Component libraries like Lit. It integrates directly into Chrome DevTools, providing a dedicated panel that lists all custom elements on the current page and accessible iframes.

With this tool, developers can easily inspect and modify attributes and properties (including complex objects and arrays) of custom elements, observe dispatched events, and invoke methods with return logging. Managing Shadow DOM elements becomes less cumbersome by eliminating the need for verbose selector commands. Web Component DevTools leverages the Custom Elements Manifest to analyze components, enhancing debugging and development workflows directly through the browser UI.

Add-on Developer Tools Programming Productivity

By:

Matsuuu

Daily users:

1,109 -12

Rating:

5.00

(5)

Version:

0.1.17 Last updated: 2022-06-20

Version code:

5421069

Creation date:

2021-07-16

Risk:

Permissions:

tabs
contextMenus

Size:

1.77MB

Email:

hu*****@gmail.com

URLs:

Website

Full description:

Source:

Firefox Add-ons Store

Data ingested on:

2025-07-19

Setup email notification for Web Component DevTools

Ranking

# 2,906 ▼ 11

Other rankings

#337 in Web Development ▼ 1

#2 in component keyword 13

#34 in tools keyword 64 ▲ 1

#50 in library keyword 35 ▼ 3

#55 in come keyword 39 ▼ 1

Upgrade to see more rankings

Other platforms

Web Component DevTools (v0.2.2)

7,000 4.33

(9)

User reviews

Gan Jing World is a clean, curated universe and a dynamic, overlapping network of integrated platforms and services. ==> https://www.ganjing.com

by Ga*****, 2022-12-26

View all user reviews ›

Extension safety

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.

Web Component DevTools 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 ******* ******* **** *** ****** ***** *** ***** ** ******* **** ********* ********* ** * *********** *****
Medium ****** ** ********* ****** ********* *** **** ****** **** **** ** ******* ** ********** **** ***********

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.

Web Component DevTools 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.
Low **** ********* *** ******* **** **** * ****** **** ***** ******** *** **** ****** ** ** ****** *** *****
Low **** ********* *** ***** **** **** * ****** **** ***** ********** *** **** ****** ** ** ****** *** *****
Good **** ********* *** **** **** *******

Upgrade to see full risk analysis details

Instantly check and monitor your browser extensions' risks and permissions with Extension Guard.