Web Developer

Name: Web Developer
Rating: 4.2996 (494 reviews)
Author: chrispederick

By: chrispederick Add-on

The Web Developer extension adds various web developer tools to the browser.

Overview

Firefox Add-ons Store

Daily users

65,803 ▲ 534

Data as of 2026-10-06

Rating:

4.30

(494)

Version:

3.0.1

Last updated: 2024-06-25

Features & Capabilities

The Web Developer Chrome extension integrates a comprehensive set of web developer tools directly into your browser, making it easy to inspect, debug, and optimize your websites. Whether you need to analyze CSS, manipulate forms, manage cookies, or view page information, this extension provides quick access to essential functionalities that streamline your development process.

Ideal for front-end designers, developers, and quality assurance professionals, the Web Developer extension enhances productivity by centralizing useful development utilities. Its intuitive toolbar offers various options for testing different webpage elements and improving website performance efficiently.

User Growth & Download Statistics

Add-on Developer Tools Programming

By:

Daily users:

Rating:

Version:

3.0.1 Last updated: 2024-06-25

Version code:

5762026

Creation date:

2004-06-12

Firefox add-on GUID:

{c45c406e-ab73-11d8-be73-000a95be3b12}

Firefox add-on numeric ID:

Weekly download count:

456

Firefox on Android:

Risk:

Permissions:

Host permissions:

<all_urls>

Content scripts matches:

<all_urls>

Size:

569.78KB

URLs:

Website

Full description:

Source:

Firefox Add-ons Store

Data ingested on:

2026-10-06

Compare stats and ranking:

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:: chrispederick
Firefox Add-ons Store: https://addons.mozilla.org/firefox/addon/web-developer/
Website:: http://chrispederick.com/work/web-developer/firefox/help/

Permission Change History

2024-06-12: Version 2.0.5 → 3.0

Add Host permissions: <all_urls>

Add Permissions: browsingData scripting

Remove Permissions: clipboardWrite <all_urls>

User Reviews

Users consistently praise Web Developer as a fast, easy-to-use extension that provides quick access to page details like anchors and content sizes. It's described as extremely useful and essential, with many users noting they rely on it regularly and have used it for years. Several reviews highlight its free availability, good value, and trustworthiness, while no common drawbacks are mentioned.

Pros

Highly reliable and performs perfectly (works 100%)
Quick and easy access to page information (anchors, content sizes, etc.)
Extremely useful and frequently used tool
Long-time trusted extension used for decades
Free extension with strong value

Cons

Recent reviews

2026 and still great—one of the select few Firefox extensions I allow to have pinned to the toolbar which tells you this is truly a 5/5⭐ extension.

by sk***** 2026-04-26

by L0***** 2026-03-10

View all user reviews ›

Is Web Developer 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.

Web Developer 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.

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

Risk likelihood analysis details

Low This extension was updated more than 6 months ago. Older versions are more likely to be stable and safe.
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